影响苜蓿自交结实性的因素研究

Study on the Factors Influenced Fecundity of Inbred of Alfalfa

调查了10个苜蓿品种的自然授粉和人工授粉3种自交方式处理的自交结实性。结果表明:苜蓿不同品种的自交结实率各不相同,均存在显著差异,但品种间的单荚螺旋数和种子千粒重差异不显著。人工授粉较自然授粉可显著提高同花序自交和同株内自交处理的苜蓿自交结实率。3种自交方式的自交结实率顺序为同株内自交>同花序自交>单花自交,同株不同花序间自交与同花序不同花间自交的结实率差异不显著,但2个处理均与单花自交处理差异显著。

Three inbred ways of 10 alfalfa varieties with natural pollination and artificial pollination were investigated. The results showed that there were significant difference of alfalfa varieties in self-fruitful rate, and there was no obvious difference of alfalfa varieties in spiral number of one pod and 1 O00-grain weight. Compared with natural pollination, the self-fruitful rates of inbred in same inflorescence and inbred in same plant with artificial pollination increased significantly. The order of self-fruitful rates was that inbred in same plant 〉 inbred in same inflorescence 〉 inbred in same flower, no obvious difference in self-fruitful rate between inbred in same plant and inbred in same inflorescence was found, yet there were significant difference between the two inbred ways and inbred in same plant.