Indian Society of Genetics & Plant Breeding

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Genetic studies for yield and nutritional traits in unpolished rice RILs of MTU1010 x BR2655

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A study was carried out to access the genetic variability in
a set of 190 recombinant inbred lines (RILs) of rice derived
from MTU1010 and BR2655. Plant height and number of
productive tillers per plant recorded high PCV and GCV
during
kharif 2016, whereas number of filled grains per
panicle, grain yield per plant, grain zinc concentration and
grain iron concentration during
rabi 2016-17.The estimates
of PCV were slightly higher than the corresponding GCV
estimates for all the traits studied indicating that the
characters were least influenced by the environment. High
heritability coupled with high genetic advance as per cent
of mean was noticed for traits like plant height, number of
productive tillers, number of filled grains per panicle, 1000-
grain weight, grain yield per plant, grain iron concentration
and grain zinc concentration respectively during
kharif 2016
and
rabi 2016-17 indicating that traits are under additive
genetic control, simple selection would likely be effective
for further improvement of these traits in desirable
direction. RILs J16, J144 and J146 have shown higher grain
yield per plant with high iron and zinc concentrations.
  

Keywords: F8, F9 RILs, genetic variability, heritability, genetic advance

Info

Year: 2020
Volume: 80
Issue: 3
Article DOI: 10.31742/IJGPB.80.3.12
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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