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Micropropagation and characterization of soybean genotypes showing differential fertility under different temperature and photoperiod regimes

KrishiKosh

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Title Micropropagation and characterization of soybean genotypes showing differential fertility under different temperature and photoperiod regimes
M Sc
 
Creator HUYNH NGOC HAI
 
Contributor S.K. Lal)
 
Subject You have exceeded your usage quota. Please contact gshukla [at] iitk.ac.in
 
Description T-8402
The present study was undertaken to characterize the soybean lines which
showed differential fertility under different photo-period and temperature situation. A
set of 32 lines were selected among a set of 244 lines studied earlier. During springsummer
season, flowering was observed in all the 32 soybean lines screened.
However, pod formation was observed in only 24 genotypes. Flowering was delayed
by an average of 21 days as compared to flowering during the main season, i.e., kharif
season. The average pollen fertility was low (0.38 to 22.05%). Genotypes which
showed no pod formation showed very high sterility (0.91 to 6.85%). Sensitivity to
both photo-period (delay in days to flower) and heat (pollen sterility) was responsible
for poor pod formation during spring-summer season. One line (TNAUS56) showed
no deviation in days to flowering and the percentage gain in response rate was found
to be very low (2.38). The feasibility of these lines to be used as EGMS lines was not
clearly established. It needs further studies to establish a relationship between pollen
sterility and photo period and or temperature.
IARI,
 
Date 2016-11-21T13:05:47Z
2016-11-21T13:05:47Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/86638
 
Format application/pdf
 
Publisher IARI, DIVISION OF GENETICS