甘蔗常用亲本及杂交组合经济育种值分析

【目的】为评价我国甘蔗亲本的遗传特点和组合的选配效果。【方法】采用澳大利亚家系试验法，借助R软件对35个家系F1群体的株高、茎径、有效茎、蔗茎产量、蔗糖分等5个主要数量性状进行经济育种值（EBV）分析。【结果】24个母本经济育种值变幅为-205.95～225.70元，有11个母本经济育种值为正值；18个父本经济育种值变幅为-23.54～30.23元，有8个父本经济育种值为正值；35个家系经济育种值变幅为-259.79～341.96元，有15个家系经济育种值为正值。【结论】24个母本中，ROC22、粤糖92-1287、内江03-218、ROC25、HOCP92-648等5个可作为生产性母本，建议加大力度使用。18父本中，崖城84-153、ROC22和粤糖00-319等3个亲本可作为生产性父本，建议加大力度使用。ROC22?崖城84-153、粤糖92-1287?粤糖00-319、内江03-218識OC22、ROC22?粤糖93-159、ROC25?粤糖93-159、桂糖00-122識OC22、崖城97-46識OC22和HoCP92-648識OC26等8个家系可作为生产性家系该批组合易选育出高经济效益的新品种，建议加大力度使用。

Analysis on Economic Breeding Values of Usual Sugarcane Parents and Their Crosses

In order to evaluate the genetic character of sugarcane parents and the matching effect of cross combination, the economic breeding values of F₁ groups from 35 families were analysis by means of R Software and Australian family test, including plant height, diameter, number of stalk, cane yield and sugar content. The results showed that among 24 female parents, ROC22, Yuetang 92-1287, Neijiang 03-218, ROC25, HoCP 92- 648 were fit for productive females. Among 18 male parents, Yacheng 84-153, ROC22, Yuetang 00-319 were fit for productive males. The eight families, such as ROC22×Yacheng 84-153, Yuetang 92-1287×Yuetang 00-319, Neijiang 00-318×ROC22, ROC22×Yuetang 93-159, ROC25×Yuetang 93-159, Guitang 00-122×ROC22, Yacheng 97-46×ROC22, and HoCP92-648×ROC26, could be used as productive families, they might be breed new varieties with great economic benefit. So, it is suggested that these parents and families should be extent and used vigorously.