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Tytuł:
Can mean germination time predict seed vigor of canola (Brassica napus L.) seed lots?
Czy średni czas kiełkowania może być wskaźnikiem wigoru nasion rzepaku (Brassica napus L.)?
Autorzy:
Amirmoradi, Shahram
Feizi, Hassan
Powiązania:
https://bibliotekanauki.pl/articles/1628037.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
oilseed
vigor
seed viability
Opis:
The aim of this research was to test if mean germination time (MGT) can predict seed vigor in 10 seed lots of canola. There was a significant difference between the final germination percentages of the 10 seed lots tested (‘Hyola 330’, ‘Hyola 401’, ‘Okapi’, ‘Elite’, ‘SLMO 46’, ‘Zarfam’, ‘RGS 003’, ‘Option 500’, ‘Echo’, ‘Rainbow’) and a highly significant correlation between MGT and this value. Of the 10 seed lots, ‘Hyola 330’ had the lowest final percentage germination (62%) and the highest MGT, 3.64 days. The correlation between MGT and the proportion of “normal” seedlings was also significant. ‘Hyola 330’ had the lowest percentage of normal seedlings (60%). A tetrazolium test showed that this lot had some dead seeds that could not germinate; some seeds were viable, but they would produce abnormal seedlings. One of the main reasons of low final germination percentage and high MGT in ‘Hyola 330’ was low viability of this seed lot. Mean germination time is suggested as a good indicator of seed vigor in canola.
Celem badań było sprawdzenie, czy na podstawie średniego czasu kiełkowania dziesięciu zestawów nasion rzepaku (Brassica napus L.) można przewidzieć wigor nasion. Stwierdzono istotne różnice w proporcji wykiełkowanych nasion pomiędzy badanymi odmianami rzepaku (‘Hyola 330’, ‘Hyola 401’, ‘Okapi’, ‘Elite’, ‘Slmo 46’, ‘Zarfam’, ‘RGS 003’, ‘Option 500’, ‘Echo’, ‘Rainbow’) oraz silną korelację między średnim czasem kiełkowania i procentem skiełkowanych nasion. Wśród przebadanych zestawów nasion, odmiana ‘Hyola 330’ wykazała najniższy udział skiełkowanych nasion (62%) i jednocześnie najdłuższy średni czas kiełkowania nasion – 3.64 dnia. Stwierdzono również istotną korelację pomiędzy średnim czasem kiełkowania a liczbą prawidłowo rozwijających się siewek. W przypadku odmiany ‘Hyola 330’ stwierdzono najniższy procent poprawnie rozwijających się siewek (60%). Test na wigor nasion (z użyciem tetrazolu) rzepaku ‘Hyola 330’ wykazał duży udział nasion martwych, niezdolnych do kiełkowania oraz nasion żywotnych, ale dających nieprawidłowo rozwijające się siewki. Jedną z głównych przyczyn niskiego udziału skiełkowanych nasion i długiego czasu kiełkowania nasion odmiany ‘Hyola 330’ była niska żywotność nasion. Wyniki badań wskazują, że średni czas kiełkowania jest dobrym wskaźnikiem wigoru nasion rzepaku.
Źródło:
Acta Agrobotanica; 2017, 70, 4
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Germinability of soybean seeds stored more than 30 years in the Bulgarian national seed genebank
Autorzy:
Desheva, Gergana
Petrova, Sofia
Deshev, Manol
Powiązania:
https://bibliotekanauki.pl/articles/1182423.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
genebank
seed germination
seed longevity
seed viability
soybean
Opis:
The maintenance of seed viability over long periods of time in genebanks is a key element in conservation of plant genetic resources. In this work, data obtained at the Bulgarian National seed Genebank from the routine task of monitoring seed viability from soybean were analyzed. Differences between initial, first and second germination test after 11 and 34 years of long-term storage were assessed among 182 accessions from Glycine max (L.) Merr. The samples were regenerated during 1978-1981 growing seasons. On the basis of experimental data, the seed storage characters - σ, P50% and P10% were determined allowing the prediction of seed storage life and the regeneration needs. Significant decrease in seed viability after 11 years of storage was not recorded in the investigated soybean accessions from the different regeneration years. When comparing the initial germination percentages with results from the second control test after 34 years of storage were found significant differences in the loss of seed viability among genotypes from different regeneration years. The frequency of odd results were most significant for genotypes regenerated in 1981 (0.691) in comparison with these from other regeneration seasons. The highest Ki value (2.09) was recorded for accessions from 1981 harvest year; where rate of seed deterioration (1/σ) was also highest (-0.044). The lowest values both for Ki and 1/σ were found for the groups of accessions harvested in 1978 and 1979. There was a wide variation between groups of accessions regenerated in different years in both the time taken for viability to fall to 50% and the time for seed viability reduction with 10%. The predicted mean safe storage time for Glycine max (L.) Merr. was 25.54 years. Total 76 accessions or 42,2% of analyzed accessions had significant decrease of germination after 34 years of storage and would need regeneration.
Źródło:
World Scientific News; 2017, 69; 29-46
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of corona discharge field on seed viability and dynamics of germination
Autorzy:
Lynikiene, S.
Pozeliene, A.
Rutkauskas, G.
Powiązania:
https://bibliotekanauki.pl/articles/26555.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
corona discharge field
viability
germination dynamics
seed viability
Źródło:
International Agrophysics; 2006, 20, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shelf life of kenaf (Hibiscus cannabinus L.) seed stored under humid tropical conditions
Autorzy:
Adebisi, M.A
Esuruoso, O.A.
Adetumbi, J.A
Abdul-Rafiu, A.M.
Kehinde, T.O.
Ajani, O.O.
Agboola, D.A.
Powiązania:
https://bibliotekanauki.pl/articles/2199723.pdf
Data publikacji:
2012-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
probit modelling
storage life
seed quality
seed viability
seedling vigour
Opis:
Successful crop production depends initially on the availability of high-quality seed. Seed viability and vigour of four kenaf varieties during storage were investigated. Seeds of each variety were packed inside thick polythene bags and kept in Seed Stores under ambient conditions in two storage locations (Federal University of Agriculture, Abeokuta (FUNAAB) (29.8°C, 59.10 RH%) and Institute of Agricultural Research and Train- ing, Ibadan (27.5°C, 64.68 RH%) for 240 days (8 months).  Seeds were sampled during storage at 0, 60, 120, 180 and 240 days and tested for seed viability and seedling vigour index. Data collected on seed viability and seedling vigour were analyzed using ANOVA, mean separation using Duncan Multiple Range Test at 5% probability level and PROBIT analysis. The results showed differential responses in the two quality traits due to differences in storage location and varieties. Ibadan storage location provided more favourable conditions for higher seed quality compared to Abeokuta location while Ifeken 400 and Tianung had the best storage potential. The study showed that under ambient humid tropical conditions, storage period should not exceed 180 days (6 months) in order to maintain higher physiological quality with little or no cost. The PROBIT result revealed that the highest seed shelf life (longevity) of kenaf seeds of 8 to 9 months was derived for seeds of Ifeken 400 and Tianung stored in Ibadan and Abeokuta. The shortest shelf life of 6 months was esti- mated for Ifeken 100 stored in both locations.  
Źródło:
Plant Breeding and Seed Science; 2012, 67; 75-86
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on the survival in liquid nitrogen (LN) of the three rice seed cultivars collected from Nagaland
Autorzy:
Lanuinla, Lanuinla
Powiązania:
https://bibliotekanauki.pl/articles/1031856.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Germination
Liquid Nitrogen
Moisture content
Preserved
Seed Vigour
Seed viability
cryostorage
Opis:
The effect of cryopreservation on seed germination and seed vigour, and seeds with different moisture regimes have been studied to find out if they are a good candidate for LN by storing seeds in liquid nitrogen (196 °C) for 24 and 72 hours from three rice seed cultivars, namely Lisem, Manen, and Mapok. For all the three cultivars studied, cryopreservation did not decrease germination percentages or seed vigour and it also appears that seed moisture content ranging from 10% to 18% is not a determining factor for the survival of seeds up to 72 hour storage of the seed in LN.
Źródło:
World News of Natural Sciences; 2020, 30, 2; 136-143
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of dormancy breaking in stored seeds on germinability and seedling emergence of Tilia platyphyllos
Autorzy:
Tylkowski, T
Powiązania:
https://bibliotekanauki.pl/articles/41170.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
dormancy breaking
seed
stored seed
germinability
seedling emergence
Tilia platyphyllos
scarification
stratification
seed viability
Opis:
Fruits of large-leaved lime dried to 10% may be stored for 16 years in sealed containers at –3°C without loosing seed viability. Dormancy of seeds, extracted from hard fruit coats, may be released after chemical scarification in concentrated sulphuric acid for 10 minutes, followed-by stratification without any medium (chilling) at the temperature of 3°C, for 20–24 weeks, i.e. until the first seeds start to germinate. After such pretreatment, during the germination test conducted at alternating temperatures 3~15°C (16 + 8 hours/day) seeds germinate near 90% in several weeks. For seedling production scarified and stratified seeds should be sown in early spring into trays under a plastic tunnel which ensures a high percentage of seedlings emergence. Sowing of the pretreated seeds in spring in a open nursery gives poor results.
Źródło:
Dendrobiology; 2006, 56; 79-84
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prolongation of seed viability under storage
Autorzy:
Pati, Chandan Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1068629.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Green gram
Melia azadarch
Phaseolous mungo
accelerated ageing
seed potentiation
seed viability
Opis:
Keeping in mind the problem of seed storing in tropical and subtropical countries where high temperature and high relative humidity (RH) greatly accelerate seed ageing phenomenon causing consequent deterioration and non-viability of seeds, an investigation was carried out on maintenance of storage potentiation of a green gram species by using selected plant extract. Pretreatment of green gram (Phaseolous mungo L.) seeds with aqueous solution of leaf extract of neem (Melia azadarch) 50g in 500 ml distilled water for 2 hours and then dried back to the original dry weight of the seeds before accelerated ageing treatment (99.1% RH and 32±2 ºC) for different durations (0 to 30 days) slowed down the rapid loss of germination and reduced the time (h) required for 50% seed germination (T50) of the seeds. The plant extract also significantly arrested the reduction of protein, insoluble carbohydrate, DNA and RNA levels as well as activity of catalase enzyme of seed kernels during forced ageing period. Ageing-induced stimulation of the activity of amylase enzyme was also alleviated by the seed pretreating agent.
Źródło:
World Scientific News; 2019, 132; 256-263
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of seed viability of Callery pear (Pyrus calleryana) in Poznan
Autorzy:
Bednorz, L.
Llaka, A.
Powiązania:
https://bibliotekanauki.pl/articles/790617.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu
Tematy:
seed viability
Callery pear
Pyrus calleryana
Rosaceae
street tree
Poznan city
Opis:
Seeds of Pyrus calleryana were sampled from 11 stations located in Poznań green areas. Three of them represented cultivar ‘Capital’, whereas the remaining eight represented cultivar ‘Chanticleer’. The viability of seeds was qualified by means of tetrazolium test. The results of staining test showed that viability of Callery pear seeds was high and ranged from 90 to 100%.
Źródło:
Steciana; 2017, 21, 1
1689-653X
Pojawia się w:
Steciana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strong potential for endozoochory by waterfowl in a rare, ephemeral wetland plant species, Astragalus contortuplicatus (Fabaceae)
Autorzy:
Lovas-Kiss, A.
Sonkoly, J.
Vincze, O.
Green, A.J.
Takacs, A.
Molnar, A.V.
Powiązania:
https://bibliotekanauki.pl/articles/56900.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
strong potential
endozoochory
waterfowl
rare species
wetland
plant species
Astragalus contortuplicatus
Fabaceae
germination
experiment
mallard
seed dispersal
seed ecology
seed viability
Opis:
It was proposed previously that passive dispersal by migratory aquatic birds explain the widespread distribution of many wetland organisms. Several experimental studies have shown that many widespread wetland plant species can be readily dispersed within the guts of Anatidae. However, it is unclear whether plants with a more restricted distribution are able to disperse via waterbirds. This paper addresses the dispersal ability and germination ecology of the little-known Hungarian milkvetch Astragalus contortuplicatus, which occurs on banks of continental rivers and has a limited and unpredictable distribution. To test whether limited capacity for endozoochory by waterfowl could explain the sporadic appearance of this species, we force-fed ten captive mallards (Anas platyrhynchos) with 100 milkvetch seeds each. Droppings were collected for up to 45 h after feeding. Intact and viable seeds were found in the droppings of each mallard, and altogether 24.7% of seeds fed were recovered intact. The proportion of retrieved seeds that germinated (27.0%) was significantly higher than that of untreated control seeds (0.5%), but significantly lower than that of mechanically scarified seeds (96.0%). Retrieved seeds that germinated developed into healthy mature plants. Given the average flight velocity of mallards, seeds of A. contortuplicatus may travel up to 1600 km inside the digestive tract of migrating individuals. Our results suggest that avian vectors may be more important for the dispersal of rare higher plants (especially those with a hard seed-coat) than hitherto considered. Moreover, they suggest that rarity does not necessarily indicate limited dispersal ability, and may instead be explained by specific habitat requirements.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Developmental and chemical characteristics of Melittis melissophyllum L. in limited access of sunlight
Autorzy:
Szymborska-Sandhu, I.
Powiązania:
https://bibliotekanauki.pl/articles/2049054.pdf
Data publikacji:
2020
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
shading
developmental stage
seed viability
flavonoids
phenolic acids
coumarins
zacienienie
fazy rozwojowe
żywotność nasion
flawonoidy
kwasy fenolowe
kumaryny
Opis:
Introduction: Bastard balm grows in forests, in central and southeastern part of Europe. The herb of this species is rich in phenolics, mainly flavonoids, phenolic acids and coumarins. The plant is used in traditional European medicine, in digestive problems and for aromatizing tobacco and alcohol products. Objective: The purpose of this study was to determine the influence of shading on bastard balm development and the accumulation of phenolics in its herb, with special respect to coumarin as a quality marker of this raw material. Methods: The plants were cultivated in full sunlight, in 30% and 50% shade provided by shading nets. The herb was harvested from plants in the third year of vegetation, at four subsequent developmental stages and then subjected to chemical evaluation. In the raw material, the total contents of flavonoids, phenolic acids and coumarins was determined. The content of coumarin was analyzed using HPLC-DAD. Results: Plants grown in 30% shade produced the highest number of flowers and seeds. They produced the highest mass of herb at the beginning of the seed-setting stage. The plants grown in full sunlight revealed the highest content of flavonoids and phenolic acids, especially during flowering and at the beginning of the seed-setting stage. The mass of herb obtained by plants cultivated at deep (50%) shade was the lowest, however, the content of coumarin in these plants was the highest. Conclusion: The influence of shade on bastard balm was expressed by the herb mass and coumarin content increment. The plants thrived best in 30% shade, both in terms of flowering abundance and the mass of herb, whereas those from 50% shade were the richest in coumarin.
Źródło:
Herba Polonica; 2020, 66, 1; 1-8
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ impregnacji próżniowej na energię i zdolność kiełkowania ziarna żyta
The influence of vacuum impregnation of rye grains on germination energy and ability
Autorzy:
Rydzak, L.
Andrejko, D.
Powiązania:
https://bibliotekanauki.pl/articles/7455800.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
impregnacja prozniowa
zyto
ziarno
energia kielkowania
zdolnosc kielkowania
zywotnosc nasion
vacuum impregnation
rye
grain
germination energy
germination ability
seed viability
Źródło:
Acta Scientiarum Polonorum. Technica Agraria; 2008, 07, 1-2; 35-41
1644-0684
Pojawia się w:
Acta Scientiarum Polonorum. Technica Agraria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmienność przestrzenna i czasowa opadu bukwi na podstawie obserwacji w Babiogórskim i Ojcowskim Parku Narodowym
Spatial and temporal variation in seed fall of beech in the Babia Góra and Ojców National Parks
Autorzy:
Skrzydłowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/1026403.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
zmiennosc czasowa
buk zwyczajny
zmiennosc przestrzenna
produkcja nasienna
Babiogorski Park Narodowy
lesnictwo
Fagus sylvatica
Ojcowski Park Narodowy
drzewa lesne
fagus sylvatica
seed production
seed dispersal
seed viability
Opis:
Spatial and temporal pattern of seed fall of beech was examined in the subalpine and upland natural forests with prevailing beech. The obtained results point to several regularities associated with seed density, fraction of full seeds in the seedlot, date of seeding and constant of the spatial pattern of beech seed fall.
Źródło:
Sylwan; 2003, 147, 06; 79-86
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical implications of inconsistent germination and viability results in testing stored Fagus sylvatica seeds
Autorzy:
Bezdeckova, L.
Prochazkova, Z.
Matejka, K.
Powiązania:
https://bibliotekanauki.pl/articles/41257.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
practical implication
germination
viability
testing
Fagus sylvatica
beechnut
seed
Opis:
Germination and viability of stored European beech (Fagus sylvatica) seeds can vary depending upon the time when the tests are done during seed storage. To determine the possible sources of such variation the germination (GERM), germination rate expressed as mean germination time (MGT) and viability (VIAB) of six beechnut lots (three lots from two crop years) were determined monthly for one year using controlled laboratory conditions and standard tests. Higher GERM of some lots occurred when tests for stored seeds were carried out in spring and early autumn while other lots germinated better during summer tests. Similarly, different germination speed (dormancy release) and VIAB were observed in different months for different lots. However, no consistent seasonal fluctuation in GERM, MGT or VIAB of the beechnuts was observed in the tests. The reason for this fluctuation seems to be initial quality (germination and dormancy) of beechnut lots rather than any endogenous factors
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollination and floral biology of Adonis vernalis L. (Ranunculaceae) - a case study of threatened species
Autorzy:
Denisow, B.
Wrzesien, M.
Cwener, A.
Powiązania:
https://bibliotekanauki.pl/articles/58993.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
pollination
floral biology
pollen viability
seed
Adonis vernalis
Ranunculaceae
threatened species
Opis:
Although the knowledge of pollination systems of rare and threatened species is one of the principles for development of optimal conservation and management strategies, the data about their pollination requirements are scarce or incomplete. Different problems are listed (xerothermic habitat disappearance, overgrowing of patches, plant biology i.e., slow plant growth, problems with seed germination) among the possible causes of Adonis vernalis being threatened, but until now no consideration was given to the flowering biology and pollination. The observations of flowering biology of A. vernalis (Ranunculaceae), a clonal species, were conducted in an out-ofcompact- range population, in the Lublin Upland, Poland (51°18'55" N, 22°38'21" E), in 2011–2013. The reproductive potential of A. vernalis is related to the population age structure, pollination syndrome, and breeding system. The flowers exhibit incomplete protogyny. The dichogamy function is supported by different (biological, morphological) mechanisms. Stigma receptivity occurred about one day before anthers started shedding self-pollen, and pollen viability was increasing gradually during the flower life-span (66.3% in distal anthers vs. 77.3% in proximal). The decrease in pollen production and in pollen viability coincided with the lowest degree of seed set, irrespective of the pollination treatment. Pollen vectors are necessary for efficient pollination, as the proportion of pistils setting fruits after open pollination (41–82.1%) was significantly higher compared to spontaneous self-pollination (only 5.5–12.3%). The pollination requirements together with pollen/ovule ratio (P/O = 501) indicate a facultative xenogamous breeding system in A. vernalis. Therefore, in the conditions of the global lack of pollinators, improper pollination may weaken the population by leading to a decrease in the proportion of recombinants, and in addition to other factors, may accelerate extinction of small A. vernalis populations.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of pollen viability on seed set and fruit mass in strawberry [Fragaria x ananassa Duch.]
Wplyw zywotnosci pylku na osadzenie nasion i mase owocow truskawki [Fragaria x ananassa Duch.]
Autorzy:
Kaczmarska, E
Dobrowolska, A M
Hortynski, J A
Powiązania:
https://bibliotekanauki.pl/articles/27873.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
spurious fruit
seed set
plant breeding
pollen viability
strawberry
Fragaria x ananassa
fruit mass
Opis:
This research was conducted in 2006 in the Experimental Station of the Department of Genetics and Horticultural Plant Breeding in Felin near Lublin. It included 7 cultivars of strawberry (‘Pastel’, ‘Salut’, ‘Teresa’, ‘Jota’, ‘Paula’, ‘Senga Sengana’, ‘Plena’) and two selected clones: 2395 and 3995 that belonged to the Department. Analysis of pollen fertility was carried out on the basis of materials collected on fi ve occasions: on May 17 (at the beginning of fl orescence), May 20 and May 24 (the peak of fl orescence) and on June 2 and June 13 (the end of fl orescence). Smear preparations stained with 2% acetocarmin and glycerin solution (1:1) were used to test pollen viability. The highest percent of viable pollen in 2006 was in cultivar ‘Jota’ (70.88%). The lowest viability had pollen of ‘Teresa’ cultivar (33.83%). The average content of viable pollen grains was the lowest on May 20 (36.79%). The highest pollen fertility was noted on June 2 (62.15%), the percent of fertile pollen on a similar level was observed on May 17 and 24 and June13. The cultivar ‘Jota’ was characterized by an increased level of pollen fertility that was quite high during the whole period of fl orescence. The number of seeds has a great infl uence on the proper development of spurious strawberry fruit. The mass of seeds from a single fruit has a great infl uence on the mass of fruits in both large and small fruit categories. Pollen viability affected the mass of seeds on big fruits (r = 0.444), but there is no clear direct relationship between pollen fertility and mass of strawberry fruit(r = -0.193 and r = -0.052).
Badania dotyczące jakości pyłku oraz wybranych cech użytkowych owoców truskawki prowadzono w roku 2006 na plantacji doświadczalnej Katedry Genetyki i Hodowli Roślin Ogrodniczych w GD Felin k. Lublina. Obejmowały one siedem odmian truskawki (‘Pastel’, ‘Salut’, ‘Teresa’, ‘Jota’, ‘Paula’, ‘Senga Sengana’, ‘Plena’) i dwa wyselekcjonowane klony: 2395 oraz 3995, znajdujące się w kolekcji KGiHRO. Badania żywotności pyłku przeprowadzono w oparciu o materiał pobrany w czterech terminach: 17 V (na początku kwitnienia), 20 i 24 V (w pełni kwitnienia) oraz 2 i 13 VI (pod koniec kwitnienia). Wykonano preparaty rozmazowe barwione 2% roztworem acetokarminu z gliceryną (1:1). Największy procent żywotnego pyłku stwierdzono u odmiany ‘Jota’ (70,88%), natomiast najniższą żywotność miał pyłek odmiany ‘Teresa’ (33,83 %). Średnia zawartość żywotnych ziaren pyłku była najniższa 20 maja i wynosiła 36,79%. Największą płodność uzyskał pyłek 2 VI (62,15%), w pozostałych trzech terminach (17 i 24 maja oraz 13 czerwca) procent płodnego pyłku utrzymywał się na zbliżonym poziomie. W przypadku odmiany ‘Jota’ płodność pyłku utrzymywała się na wysokim poziomie w ciągu całego okresu kwitnienia. Na podstawie analizy statystycznej wyników zbadano zależności między płodnością pyłku a liczbą orzeszków z pojedynczego owocu, masą orzeszków na owocu, oraz masą pojedynczego owocu. Moc związku między badanymi cechami oszacowano za pomocą współczynnika korelacji. Porównując średnie wartości analizowanych cech dla wszystkich badanych genotypów stwierdzono, że zarówno liczba orzeszków z pojedynczego owocu jak również ich masa w grupie owoców dużych znacznie przewyższają analogiczne wartości oszacowane dla owoców małych. Masa orzeszków z pojedynczego owocu w sposób wyraźny wpływa na masę owoców obu kategorii, tj. owoców dużych i małych. Żywotność pyłku miała pozytywny wpływ na masę orzeszków na owocach dużych (współczynnik korelacji r = 0,444), natomiast nie stwierdzono bezpośredniej zależności między płodnością pyłku a masą owoców truskawki (współczynniki korelacji odpowiednio dla owoców dużych i małych, r = -0,193 i r = -0,052).
Źródło:
Acta Agrobotanica; 2008, 61, 1
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

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