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Wyszukujesz frazę "Chanda, S. V." wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Relationship between water content and grain weight in developing wheat grains.
Autorzy:
Chanda, S. V.
Singh, Y.D.
Powiązania:
https://bibliotekanauki.pl/articles/2198878.pdf
Data publikacji:
2002-06-23
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
grain growth analysis
water content
biphasic regression analysis
Triticum aestivum
Opis:
Grains from basal (4th), central (8th) and apical (12th) spikelets of a wheat (Triticum aestivum L.) cultivar Lok-1 were investigated for their fresh weight, dry weight and water content. Each spikelet had 3 grains and so in all 9 grains were analyzed. Grain dry weight data was fitted to polynomial equations and biphasic linear regression analysis. The experiments described here indicated that grains having maximum water content had maximum grain weight and vice versa. Maximum water content and maximum grain weight showed a highly significant linear correlation (P < 0.001). It is suggested that in genetic manipulation in wheat, maximum water content can be a used as a reliable criterion to help in selection for final grain weight.
Źródło:
Plant Breeding and Seed Science; 2002, 46, 1; 55-60
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Source-sink relationships and grain weight at different positions within wheat spike.
Autorzy:
Chanda, S.V.
Singh, Y.D.
Powiązania:
https://bibliotekanauki.pl/articles/2198848.pdf
Data publikacji:
2002-12-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
grain growth rate
grain filling duration
source-sink
Triticum aestivum
Opis:
The response in growth and final weight of grains from basal, middle and apical spikelets to increases in assimilate availability was studied by modifying source-sink relationships during the grain growth period in a wheat cultivar Lok-1. The source-sink relationship was altered in 1500 plants by removing spikelets in various positions i.e. either apical, middle or basal spikelets were pinched off on the day of anthesis. The final grain weight, grain growth rate and grain filling period (duration) was significantly affected by increasing the source capacity per grain by trimming i.e. removing some spikelets. The final grain weight was positively significantly correlated with grain growth rate while it was significantly but inversely correlated with grain filling duration. A clear effect of position of grain in spikelet and its (spikelet) position on the spike could be visualized. The results imply that there is a possibility that the availability of photosynthates is limiting and does not fully satisfy grain growth requirements. It is suggested that in this cultivar during post-anthesis period, grain yield is source limited.
Źródło:
Plant Breeding and Seed Science; 2002, 46, 2; 67-73
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of leaf area in wheat using linear measurements.
Autorzy:
Chanda, S.V.
Singh, Y.D
Powiązania:
https://bibliotekanauki.pl/articles/2198850.pdf
Data publikacji:
2002-12-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Opis:
In order to find a rapid, reliable method for estimating leaf area in wheat, field experiments were conducted with three wheat (Triticum aestivum L.) cultivars viz. Sonera, Lok-1 and Raj-1555. On the basis of correlation and regression analyses, the product of length and maximum width (LW) was found to be the best independent variable for determining the leaf area. The Y intercept had little affect on leaf area calculation and hence leaf area in wheat can be calculated by the simple equation Y = 0.75 LW. During the entire growth period leaf area and leaf dry weight was closely correlated but the logarithmic equation fitted better than the linear equation. Leaf area and total plant weight did not show any significant linear correlation.
Źródło:
Plant Breeding and Seed Science; 2002, 46, 2; 75-79
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth analysis using curve fitting method in early and late sown sunflower.
Autorzy:
Parmar, N.G.
Chanda, S.V.
Powiązania:
https://bibliotekanauki.pl/articles/2198853.pdf
Data publikacji:
2002-06-23
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
growth analysis
sunflower
relative growth rate
net assimilation rate
leaf area ratio
specific leaf area
leaf weight ratio
Opis:
Effect of sowing time on productivity of sunflower was studied. Sunflower seeds were first sown in August (early) and the second sowing was done in September (late). Growth analysis was done at an interval of 5-6 days from germination to maturation. Growth was measured in terms of dry weight and leaf area. Various growth indices like RGR, RLGR, NAR, LAR, LWR, SLA, etc. were calculated. Cubic polynomial was the best fit for all the growth parameters. The dry matter accumulation, leaf area, leaf dry weight and leaf number were significantly more in late grown crop than early grown one. The rate of total dry weight, leaf area and leaf dry weight were higher in late grown crop as compared to early grown one. RGR, RLGR and NAR were higher in the late grown crop from the beginning, which gradually decreased later on, in both the crops. LAR was distinctly more in late grown crop between d 30-40. Changes in SLA were similar to LAR while LWR was more in the beginning and decreased afterwards. RGR showed more correlation with NAR and very low correlation with LAR in both the crops. Thus it is concluded that the late sown crop had better growth, but still, to obtain maximum productivity in sunflower, improvement in RGR and NAR is required.
Źródło:
Plant Breeding and Seed Science; 2002, 46, 1; 61-69
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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