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Abdel-Moneam, M., Abdelsatar, M., Hafez, S., Gomaa, A. (2022). Evaluation of Combining Ability and Heterosis for Earliness and Growth Traits of some Sunflower Genotypes under Water Stress Conditions. Journal of Plant Production, 13(8), 565-573. doi: 10.21608/jpp.2022.151438.1145
M. A. Abdel-Moneam; M. A. Abdelsatar; Soad H. Hafez; Alaa A. Gomaa. "Evaluation of Combining Ability and Heterosis for Earliness and Growth Traits of some Sunflower Genotypes under Water Stress Conditions". Journal of Plant Production, 13, 8, 2022, 565-573. doi: 10.21608/jpp.2022.151438.1145
Abdel-Moneam, M., Abdelsatar, M., Hafez, S., Gomaa, A. (2022). 'Evaluation of Combining Ability and Heterosis for Earliness and Growth Traits of some Sunflower Genotypes under Water Stress Conditions', Journal of Plant Production, 13(8), pp. 565-573. doi: 10.21608/jpp.2022.151438.1145
Abdel-Moneam, M., Abdelsatar, M., Hafez, S., Gomaa, A. Evaluation of Combining Ability and Heterosis for Earliness and Growth Traits of some Sunflower Genotypes under Water Stress Conditions. Journal of Plant Production, 2022; 13(8): 565-573. doi: 10.21608/jpp.2022.151438.1145

Evaluation of Combining Ability and Heterosis for Earliness and Growth Traits of some Sunflower Genotypes under Water Stress Conditions

Article 5, Volume 13, Issue 8, August 2022, Page 565-573  XML PDF (773.56 K)
Document Type: Original Article
DOI: 10.21608/jpp.2022.151438.1145
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Authors
M. A. Abdel-Moneam email 1; M. A. Abdelsatar2; Soad H. Hafez1; Alaa A. Gomaa1
1Agronomy Dept., Fac. of Agric., Mansoura University, Egypt.
2Oil Crops Res. Dept., Field Crops Res. Inst., ARC, Giza, Egypt.
Abstract
Six divergent sunflower genotypes were coupled using a half-diallel mating design to determine types of combining abilities, and heterosis under normal irrigation and water stress conditions for earliness and maturity traits as well as growth traits, in Kafr–El–Mayasra Village, EL-Zarqa Distrect, Damietta Governorate, Egypt during the summer seasons 2019 and 2020. The parents and their F1 crosses were evaluated using a design of randomized complete blocks with 3 replicates. The GCA/SCA ratio under normal irrigation and water stress conditions revealed a predominance of non-additive gene action for earliness and maturity traits as well as growth traits.  For days to full maturity, Sakha 53 at normal-watering and L-105 at moisture-stress conditions, and L-216 under normal-watering and L-105 under moisture-stress conditions for no. of green leaves were the best general combiners. The generated combinations Sakha 53 × L-105 for days to full maturity, L-10 × L-216 for no. of green leaves plant-1, and L-8 × Sakha 53 for stem diameter under both irrigation treatments had desirable SCA effects as well as mid and better parents heterosis.
Keywords
Sunflower; combining ability; mid and better parent heterosis
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