重视多穗型品种的选育，是进一步提高产量的有效途径。
Selecting for multi spike genotype is an advantageous way for further promoting wheat yields.
在同一季节抽穗开花的主穗和分蘖穗之间，其颖花内的多卵频率不存在明显差异，多胚苗频率的差异也不明显。
However, there was no difference in the frequency between the main_panicles and the tilling_panicles of heading at the same season.
因此，长江下游地区的超高产水稻基因型应该具有壮秆、少蘖、多粒大穗和高光合效率等生理性状。
The major genetic characters desirable for super rice genotypes in the above regions should be strong stems, few tillers, large panicles, and high photosynthesis efficiency.
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