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为了分析辽宁稻区杂草稻的亚种特性和经济性状及其相互关系,在田间栽培条件下,观察杂草稻的生长情况、亚种特征性状和经济性状;分析了杂草稻亚种特征性状和经济性状的相互关系。结果发现杂草稻程氏指数总体呈连续变异,大部分为粳型和偏粳型,只有极少数为偏籼型或籼型,在亚种属性上并无明显分开的界限,但有偏向粳型的趋势。程氏指数采用的6个亚种特征性状之间并无较多必然联系,它们是相互独立的,从总体上影响到杂草稻的亚种特性。杂草稻穗节长和穗长、株高、芒长都达到极显著关系,籽粒长宽比也和穗长、株高、芒长达到极显著关系,叶毛却和一枝数达到极显著的负相关,程氏指数和抽穗期、穗长、株高等各项经济性状都没有达到显著关系。总体来说杂草稻是一种生物学多样性相当丰富可利用特异稻种遗传资源。
In order to analyze the subspecies and economic traits and their correlations of weedy rice in Liaoning Province, the growth of weedy rice, traits and economic traits of weedy rice were observed under field cultivation conditions. The subspecies characteristics of weedy rice The relationship between traits and economic traits. The results showed that the weedy rice Cheng’s index showed a continuous variation in general, most of japonica and japonica-type, only a very small number of indica or indica, there is no clear line in the sub-species boundaries, but biased toward japonica Type of trend. There is no necessary relationship between the six subspecies traits used in Cheng’s index. They are independent of each other and affect the subspecies characteristics of weedy rice as a whole. The length of weed panicles and the spike length, plant height and mandarin length reached a very significant relationship, and the grain length-width ratio also had a very significant relationship with the spike length, plant height and mantle length, while the leaf hairs and the number of branches reached extremely significant Negative correlation, Cheng’s index and heading date, ear length, plant height and other economic traits have not reached a significant relationship. In general, weedy rice is a species rich in biological diversity that is rich in specific rice genetic resources.