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作物学报 ›› 1963, Vol. 2 ›› Issue (02): 117-130.

• 研究论文 •    下一篇

冬小麦亲本选配的研究——Ⅰ 杂种第一代优势和配合力的分析

庄巧生; 王恒立; 曾启明; 李英婵; 李登春   

  1. 中国农业科学院作物育种栽培研究所
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1963-06-12 网络出版日期:1963-06-12

STUDIES ON THE CHOICE OF PARENTS IN WHEAT CROSSES——Ⅰ.HEREROSIS AND COMBINING ABILITY IN F1 HYBRIDS

C.S.Chwang; H.L.Wang; C.M.Tseng; Y.C.Li; T.C. Li   

  1. Institute of Crop Breeding and Cultivation; Chinese Academy of Agricultural Sciences; Peking
  • Received:1900-01-01 Revised:1900-01-01 Published:1963-06-12 Published online:1963-06-12

摘要:

本文通过优势和配合力的分析研究小麦亲本选配问题。试验表明:杂种第一代的一株粒重、一穗粒重、千粒重的优势最大,一般比两亲平均值大20—30%;其次为株高和抽穗期:其他穗部性状的优势很小或无显性。应用遗传变量成分分析法估算八个性状的配合力,在供试的亲本中,以穗长和结实小穗数的一般配合力为最大;株高、一穗粒数和一穗粒重次之;千粒重与一株穗数,一般配合力和特殊配合力所占的比重互有高低,因组合类型而异;一株粒重的一般配合力最小,它的特殊配合力占居主导地位。一般配合力大的性状,杂种与两亲平均值的相关或迴归系数也大。初步认为,在第一代对亲本或组合的评价,既要看杂种的实际表现,还要考虑它的优势,而以前者为主要依据;两亲平均值也有相当重要的意义。

Abstract:

Heterosis and genetic variance component studies on 36 wheat crosses and 14 parentsrevealed that:1.Yield per plant,kernels per spike and kernel weight of F_1 hybrids showed a markedheterosis over mid-parental values by 20-30%.Plant height and date of heading ranked next,which averaged about 10% in magnitude,being negative in direction for heading date.Fertilespikelets per head manifested only a slight degree of heterosis.F_(1-)MP s for these characterswere highly significant as shown by t-tests.However,head...

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