Drought stress is one of the major yield limiting factors in
realising the full genetic potential of wheat. In the present
study, backcross inbred line population derived from
GW322*2/ HI1500 was characterized for different morphophysiological
traits and grain yield under rainfed and
irrigated conditions. Principal component analysis revealed
that first five components explained over 66.35 per cent of
variation. Grain yield showed significant correlation with
biomass and physiological traits viz., NDVI2, NDVI3, NDVI5,
CT2, CT3 and CT4. The analysis of variance on grain yield
data showed that mean squares of environments,
genotypes and GEI were highly significant (p<0.01). To
determine effects of GEI on grain yield, data were subjected
to AMMI and GGE biplot analysis, which identified BILs
G20, G2, G254, G214, G44 and G64 as the most stable and
high yielding. Based on Smith selection index expected
genetic gain for grain yield at 5% was 131.01gm/plot. Hence,
selecting genotypes based on morpho-physiological traits
will be rewarding under moisture depleting environment.
Keywords: Genetic gain, NDVI, CT, PCA, AMMI, GGE
Year: 2020
Volume: 80
Issue: 1
Article DOI: 10.31742/IJGPB.80.1.11
Print ISSN: 0019-5200
Online ISSN: 0975-6906
B. Manu, P. Shashi Kumara, Sunil Biradar, Divya Chauhan, Rahul Phuke, Divya Ambati, S. V. Sai Prasad, P. C. Mishra, K. K. Mishra, Harikrishna, Neelu Jain, P. K. Singh, G. P. Singh and K. V. Prabhu info_circle