Daher,, E., El-Naem, S., Hefeina, A., Taha, H. (2023). Genetic Behavior of Some Rice Root Characteristics, Yield and Yield Components as Affected by Water Deficit. Journal of Plant Production, 14(2), 63-73. doi: 10.21608/jpp.2023.188682.1206
E. M. A. Daher,; S. A. El-Naem; A. G. Hefeina; H. A. N. Taha. "Genetic Behavior of Some Rice Root Characteristics, Yield and Yield Components as Affected by Water Deficit". Journal of Plant Production, 14, 2, 2023, 63-73. doi: 10.21608/jpp.2023.188682.1206
Daher,, E., El-Naem, S., Hefeina, A., Taha, H. (2023). 'Genetic Behavior of Some Rice Root Characteristics, Yield and Yield Components as Affected by Water Deficit', Journal of Plant Production, 14(2), pp. 63-73. doi: 10.21608/jpp.2023.188682.1206
Daher,, E., El-Naem, S., Hefeina, A., Taha, H. Genetic Behavior of Some Rice Root Characteristics, Yield and Yield Components as Affected by Water Deficit. Journal of Plant Production, 2023; 14(2): 63-73. doi: 10.21608/jpp.2023.188682.1206
Genetic Behavior of Some Rice Root Characteristics, Yield and Yield Components as Affected by Water Deficit
Rice Research Section, Field Crops Research Institute, Agriculture Research Center, Giza, Egypt.
Abstract
Eight local and exotic cultivars of rice were crossed to obtain 28 F1 crosses, through half diallel mating design. The eight parents and their 28 F1s ( excluding reciprocals) were grown in a randomized block design with three replications at the farm of Sakha Research Station, Sakha, Kafr El-Sheikh, Egypt in 2020 and 2021 rice seasons. GCA and SCA were significant for most of studied traits. GCA/SCA ratios were found to be less than unity for all studied traits, indicating that the non-additive type of gene action was great importance in the inheritance of these traits. Estimates of GCA effects indicated that, the parent IET1444 was a good general combiner for most of studied characters. The hybrid combinations IR 65600-77×Nerica 9 were the best SCA for most of studied characters. IR 65600-77×Nerica 9 rice hybrid exhibited significant and highly significant positive estimates of heterosis as a deviation from mid and better parent for root length, number of roots/plant, root volume, root/shoot ratio, relative water content, flag leaf area, number of panicles/plant, 1000-grain weight and grain yield/plant under water deficit conditions, except root length for better parent was insignificant.
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