论文部分内容阅读
由于多果穗玉米杂交补的茎秆品质差,不抗倒伏,所以它在生产上的应用受到限制。植株长出一个以上的果穗可能会加剧正在发育的果穗和茎秆对光合产物的竞争,引起茎秆碳水化合物向籽粒的大量再分配。这可以造成植株根系衰老,继而腐烂,最后殃及茎秆(Dodd,1977;Duvick,1974)。由于多果穗玉米的果穗数目机动性较大,可缓和种植密度或环境条件的变化,所以稳产性能比非多果穗类型的好(Prior等,1975;Collins等,1965)。为促进籽粒产量和植株抗倒伏性的同时改良,深入研究它们的相互关系
Due to the poor quality of stalk hybrids made from multi-ear maize, it is not resistant to lodging, so its application in production is limited. Plants growing more than one ear may aggravate the competition of photosynthate by the developing ear and stem, causing substantial redistribution of stalk carbohydrates to the grain. This can cause plant roots to decay, then decay, and finally to the stalk (Dodd, 1977; Duvick, 1974). Due to the greater mobility of the ears of multi-ear corn, which can mitigate plant density or environmental changes, stable yield is better than non-ear type (Prior et al., 1975; Collins et al., 1965). In order to improve both grain yield and plant lodging resistance, further study their relationship