Autor: Martyniak, J - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Próba zastosowania wskaźnika wartości użytkowo-nasiennej do oceny odmian pastewnych życicy trwałej
An attempt to use usage-seed value index to evaluate perennial ryegrass pasture cultivars
Autorzy:: Martyniak, D.
Martyniak, J.
Powiązania:: https://bibliotekanauki.pl/articles/2234877.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Łąkarskie
Tematy:: trawy pastewne
zycica trwala
odmiany roslin
ocena odmian
wartosc gospodarcza
wartosc uzytkowo-nasienna
wskaznik wartosci uzytkowo-nasiennej
nasiona
sucha masa
plony
Źródło:: Łąkarstwo w Polsce; 2006, 09; 121-130
1506-5162
Pojawia się w:: Łąkarstwo w Polsce
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Wplyw ilosci wysiewanych nasion na obsade roslin i plonowanie Lolium perenne w uprawie na nasiona
Autorzy:: Martyniak, J
Martyniak, D.
Powiązania:: https://bibliotekanauki.pl/articles/75805.pdf
Data publikacji:: 2002
Wydawca:: Polskie Towarzystwo Łąkarskie
Tematy:: obsada roslin
zycica trwala
nasiona
siew
trawy
plonowanie
uprawa na nasiona
Lolium perenne
Opis:: In the years 2000 and 2001 field experiments were conducted at two locations, using the levels of seeding rate (maximum - used in the practice, optimum 420 plants m⁻² and minimum - 210 plants m⁻²) in two cultivars of Lolium perenne L. having extreme thousand seed weight. The influence of seeding rate on plant installation (plant density and tillering) in the year of sowing and vegetative and generative shoots production in the year of seed yielding were studied. There was also studied the influence of analysed traits on seed yield. For this analyses the additional parameters: field emergence, plant installation and multiplication index were used. It was found, that actual plant density differed widely from germination capacity determined in laboratory and amounted even 50% of the field emergence. It was dependent on seeding rate and thousand seed weight of cultivar. Field emergence successfully increased when seeding rate decreased and was higher in cultivar with higher thousand seed weight. Seminally plant tillering was considerable better at lower plant density. In general, plant installation in the field conditions was in the year of sowing twice higher at minimum seeding rate. Vegetative shoot density per area unit, in autumn, did not closely correspond with seeding rate, however correlation was positive. To the lesser degree it was related to the number of vegetative shoots grown in the spring, which producted ca. 15-30% of generative shoots. Generative shoot density number depended directly on vegetative shoot number and influenced greatly seed yield (correlation coefficient 0.777). As the sowing rate decreased, the plants were a little higher and substantial increase of the thousand seed weight was recorded. Approximately the triple decrease, at the lack of statistically proved yield decrease, caused respectively the triple increase of seed multiplication coefficient, which value in one of conducted experiments, exceeded an unusual as far value - 300.
Źródło:: Łąkarstwo w Polsce; 2002, 05; 145-154
1506-5162
Pojawia się w:: Łąkarstwo w Polsce
Dostawca treści:: Biblioteka Nauki

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