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Grain Fe and Zn content, heterosis, combining ability and its association with grain yield in irrigated and aerobic rice.

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Title Grain Fe and Zn content, heterosis, combining ability and its association with grain yield in irrigated and aerobic rice.
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Creator Not Available
G. Anusha, D. Sanjeeva Rao, V. Jaldhani, P. Beulah, C. N. Neeraja, C. Gireesh, M. S. Anantha, K. Suneetha, R. Santhosha, A. S. Hari Prasad, R. M. Sundaram, M. Sheshu Madhav, A. Fiyaz, P. Brajendra, M. D. Tuti, M. H. V. Bhave, K. V. Radha Krishna, J. Ali, D. Subrahmanyam and P. Senguttuvel
 
Subject Grain Fe and Zn, heterosis, combining ability, irrigated and aerobic rice
 
Description Not Available
Genetic improvement of rice for grain micronutrients, viz., iron (Fe) and zinc (Zn) content is one of
the important breeding objectives, in addition to yield improvement under the irrigated and aerobic
ecosystems. In view of developing genetic resources for aerobic conditions, line (L)× tester (T) analysis
was conducted with four restorers, four CMS lines and 16 hybrids. Both hybrids and parental lines were
evaluated in irrigated and aerobic feld conditions for grain yield, grain Fe and Zn content. General
Combining Ability (GCA) efects of parents and Specifc Combining Ability (SCA) efects of hybrids were
observed to be contrasting for the micronutrient content in both the growing environments. The grain
Fe and Zn content for parental lines were negatively correlated with grain yield in both the contrasting
growing conditions. However, hybrids exhibited positive correlation for grain Fe and Zn with grain
yield under limited water conditions. The magnitude of SCA mean squares was much higher than GCA
mean squares implying preponderance of dominance gene action and also role of complementary
non-allelic gene(s) interaction of parents and suitability of hybrids to the aerobic system. The testers
HHZ12-SAL8-Y1-SAL1 (T1) and HHZ17-Y16-Y3-Y2 (T2) were identifed as good combiners for grain Zn
content under irrigated and aerobic conditions respectively.
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Date 2021-08-03T08:26:58Z
2021-08-03T08:26:58Z
2021-05-19
 
Type Article
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/52554
 
Language English
 
Relation Not Available;
 
Publisher Scientific Reports