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Effect of isogenic-alloplasmic cytoplasmic male sterility system on grain yield traits in pearl millet

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Relation http://oar.icrisat.org/11282/
 
Title Effect of isogenic-alloplasmic cytoplasmic male sterility system on grain yield traits in pearl millet
 
Creator Pujar, M
Govindaraj, M
Gangaprasad, S
Kanatti, A
 
Subject Pearl Millet
 
Description Pearl millet is a nutri-cereal and is grown predominantly by subsistence farmers in semi-arid
regions of India and Africa. Considering highly cross pollination nature and availability of
cytoplasmic male sterility (CMS), pearl millet hybrids are becoming a dominant cultivar type
in India. Present study aims to assess the effect of isonucleus-alloplasmic, A1, A4 and A5
cytoplasmic male sterility system on agronomic performance of pearl millet hybrids. Five
isogenic females each having 3 alloplasmic (A1, A4 and A5) cytoplasm were crossed with 6
male-parents to generate 120 hybrids and were evaluated in two contrasting season in splitsplit-
plot design (SSPD). The significant cytoplasm per se and restorer per se indicate the
both contribution to most of the traits, however, greater magnitude of contribution arises from
restorers (74% grain yield; 95% 1000-grain weight). The significant hybrids × environment
shows the mandatory of multi location testing for yield traits while non-significant of CMS ×
environment interactions reveals the greater stability of CMS. Further, no significant mean
yield differences exhibited in A1, A4 and A5 hybrids (2.53-2.81 t ha-1) indicates not any
adverse effect of cytoplasm on grain yield and associated traits. Also, diverse genetic
backgrounds used in this study exhibited significant contributions to grain yield and its
component traits. These results imply the prospects for utilization of potential alternative
cytoplasm (A4 and A5) to widen the cytoplasm base together with development of counterpart
restorers to produce future high-yielding hybrids.
 
Date 2018-12
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11282/1/2018_Pujar%20et%20al.%2C%202018_Conf_NGC2018_Page%209.pdf
Pujar, M and Govindaraj, M and Gangaprasad, S and Kanatti, A (2018) Effect of isogenic-alloplasmic cytoplasmic male sterility system on grain yield traits in pearl millet. In: 1st National Genetics Congress on Genetics for Sustainable Food, Health and Nutrition Security, December 14-16, 2018, ICAR-lndian Agricultural Research Institute, New Delhi, India,.