Title: Inheritance of Grain Yield in a Half-Diallel Maize Population
Abstract:Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining abi...Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining ability effects were significantly different among parental lines. The grain yield was under the dominance gene effect. The parents W 552 and DNB were considered suitable according to their yield capacities and general combining ability effects. The midparent heterosis values ranged from 46.10% (H.96 x DNB) to 573.12% (ALKD 222 x A 632) whereas the useful heterosis values varied between —46.47% (A 619 x A 632) and 10.78% (N 7A x ALKD 90-1), and only 9 crosses had higher grain yields than that of the check variety. Of these crosses, N 7A x ALKD 90-1, N 7A x DNB and N 7A x IDRN Cornell, were considered promising hybrids. Yar›m Diallel M›s›r Populasyonunda Tane Veriminin Kal›t›m› Ozet: Dokuz kendilenmifl m›s›r hatt› ve bunlar›n yar›m diallel melezlenmesi sonucu oluflturulan populasyonda dane verimine iliflkin kal›t›m parametreleri, heterosis ve uyuflma yetenekleri incelenmifltir. Genel ve ozel uyuflma yetenei etkileri yonunden genotipler aras›ndaki farkl›l›¤›n istatistiki olarak onemli olduu saptanm›flt›r. M›s›rda dane veriminin dominant genlerin etkisi alt›nda olduu bulunmufltur. Verim ortalamas› ve genel uyuflma yetenei etkileri dikkate al›nd›¤›nda; W 552ve DNB hatlar›n›n melez m›s›r ›slah› icin uygun anaclar olduu belirlenmifltir. Heterosis deerlerinin %46.10 (H.96 x DNB) ve %573.12 (ALKD 222 x A 632) aras›nda deifltii, buna karfl›n kullan›labilir heterosisin % —46.47 (A 619 x A 632), ve %10.78 (N 7A x ALKD 90-1) aras›nda deifltii ve buna bal› olarak sadece 9 melezin kontrol ceflitten daha verimli olduu saptanm›flt›r. Bu melez kombinasyonlar icerisinde N 7A x ALKD 90-1, N 7A x DNB ve N 7A x IDRN Cornell melezlerinin m›s›r ›slah›nda kullan›labilecei kan›s›na var›lm›flt›r.Read More
Publication Year: 2004
Publication Date: 2004-09-27
Language: en
Type: article
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Cited By Count: 42
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