Genetic behavior of some rice root characteristics, yield and yield components as affected by water deficit [electronic resource].
Language: English Summary language: Arabic Description: 63 - 73 pOther title:- السلوك الوراثي لبعض صفات جذور الأرز و المحصول و مكوناته تحت ظروف نقص المياه [Added title page title]
- Mansoura University Journal of plant protection, 2023 v. 14 (2) [electronic resource].
Item type | Current library | Call number | Status | Date due | Barcode | |
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Articles | Main | ART MUJPP V14 No2 5 (Browse shelf(Opens below)) | Available |
Includes reference.
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.
Keywords: Rice – root traits – combining ability and heterosis.
Summary in Arabic.
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