應用雜種優勢和組合力的評估研發辣椒品種

Hot Pepper Variety Development through Evaluation of Heterosis and Combining Ability

謝雪琴(Sheue-Chin Shieh) ； 黃鈺倫(Yu-Lu Huang) ； 林世雯(Shih-Wen Lin) ； 吳婉贞(Wan-Jen Wu) ； 楊瑞玉(Ray-Yu Yang) ； 葛立夫(Paul A. Gniffke)

《植物種苗》 8卷2期 (2006/06) Pp. 47-62

https://doi.org/10.30077/SN.200606.0004

摘要

對8 Lines×3 Testers雜交配對的組合與親本，進行田間產量與產量相關性狀量測，其組合的雜種優勢分析顯示，開花期、果實成熟期和產量的雜種優勢皆高於高表現親本，偏向非加性基因(non-additive gene)的作用；組合力的變方分析，除了開花期以外的其他性狀，其一般組合力和特殊組合力的變方(S^2(下标 GCA)和S^2(下标 SCA)))皆有顯著差異，表示有加性基因與非加性基因的作用；而開花期、果實成熟期、株高和產量，其組合力的SCA值大於GCA值，表示非加性基因的作用多於加性基因的作用；而FP-1×MP-4和FP-2×MP-5兩個組合為24個組合中產量最高者，其除了親本有較高的GCA值外，兩個組合則具有最高的SCA值。

關鍵字

番椒 ； 辣椒 ； 雜交一代品種 ； 雜種優勢 ； 一般組合力 ； 特殊組合力

並列摘要

Hot pepper parents and hybrids from an 8 Lines X 3 Testers array were measured for several morphological traits and yield in a replicated field trial. Analysis of heterosis indicated that early flowering and early fruit maturity as well as yield displayed high parent heterosis in every cross combination, suggesting non-additive genes action. The variance for general combining ability (S^2(subscript gca) and for specific combining ability (S^2(subscript sca) differed significantly in all the parameters except flowering date, suggesting both additive and non-additive genes actions. In traits such as early flowering, early maturity, plant height and fruit yield, SCA values were greater than GCA values, suggesting that non-additive actions are more influential than additive actions in phenotypic expression. The two cross combinations with the highest yields (FP-1/MP-4 and FP-2/MP-5) not only involved parents with superior GCAs, but also the highest SCAs measured in this evaluation.

並列關鍵字

pepper ； hot pepper ； hybrid ； heterosis ； general combining ability ； specific combining ability