夏播红小豆抗倒伏性分析及机收品种评价

Lodging Resistance Analysis of Summer Adzuki Bean and Evaluation of Mechanical Harvest Cultivars

为明确鲁西北地区夏播红小豆的抗倒伏能力,以不同来源的18个红小豆品种(系)为材料,通过测定成熟期植株地上部和地下部性状值,建立了4类不同的抗倒指数,分析表明抗倒指数[(根鲜重×茎秆强度)/(株高×地上部鲜重×分枝数)×100]与实际倒伏程度的相关性最为密切(r=-0.746**),以其作为指标综合评价红小豆种质抗倒性具有较高的准确性,结果显示,HZ4306、ZH7和XD4具有较强的抗倒能力。采用灰色综合评判方法对参试红小豆品种(系)机收的优劣进行多目标综合评判,得出ZH7、HZ4306、SXP0043、XD4和HZ4307灰色综合评判值较高(0.736~0.764),即品种的综合性状较优良,适宜作为机收品种应用,该研究可为红小豆高产栽培、机械化收获和抗倒品种的选育提供参考。

In order to determine the lodging resistance of summer adzuki bean in northwest Shandong,based on 18 adzuki bean varieties(lines)from different sources,four different lodging indexes were established by measuring the characters of the aboveground and underground parts of mature plants.The analysis showed that the lodging resistance index(fresh weight of root×strength of stem)/(plant height×fresh weight above ground×number of branches)×100was most closely related to the actual lodging degree(r=-0.746**),so it was fit for evaluating the lodging resistance of germplasm of adzuki bean.The results showed that HZ4306,ZH7 and XD4 had strong capability in lodging resistance.Then the grey comprehensive evaluation method was used to evaluate the mechanical harvest of adzuki bean varieties(lines),the results showed that the values of ZH7、HZ4306、SXP0043、XD4 and HZ4307 were higher(0.736~0.764)than others and were suitable for mechanical harvest.This study will provide reference for high yield cultivation,mechanical harvest and breeding of adzuki bean.