Stability analysis for seed longevity in landraces of sorghum [Sorghum bicolor (L.) Moench]

Published on May 02, 2020 07:44 AM

Seed longevity in sorghum is a major determinant in seed

production and germplasm preservation. Forty-six local

landraces representing nine genetic races of sorghum were

evaluated under accelerated aging and natural storage

conditions to study the genotype-environment interactions

and the stability of landraces for seed longevity. Genotypeenvironment

interactions were highly significant indicating

the influence of storage conditions on seed longevity. The

stability of landraces was estimated using mean (xi),

regression coefficient (bi) and regression deviation (S2di).

Environmental indices for the seed longevity traits were

high in E1 (fresh seed) followed by E2 (accelerated aged

seeds), E3 (stored seeds for 12 months) and E4 (stored

seeds for 24 months). Seven sorghum landraces viz., IC-

345729 (Bicolor), IC-347571 (Caudatum), IC-347577 (Durra),

IC-345244 (Durra), IC-415803 (Durra), IC-415822 (Durra

bicolor) and IC-415829 (Guinea bicolor) were stable for seed

longevity. These genotypes are therefore, recommended

for use in further breeding to improve seed longevity in

sorghum, which otherwise is generally poor.

Keywords: Sorghum landraces, seed longevity, G x E interactions, stability analysis

Year: 2020
Volume: 80
Issue: 1
Article DOI: 10.31742/IJGPB.80.1.5
Print ISSN: 0019-5200
Online ISSN: 0975-6906

N. Kannababu, R. Madhusudhana, M. Elangovan, S. Avinash, I. K. Das and Vilas A. Tonapi