种子粒度对棉花苗期生长的影响

[目的]进一步探明种子粒度对棉花苗期生长发育的影响。[方法]以转Bt基因棉33B种子为试验材料,设置大粒饱满、大粒不饱满和小粒种子3个不同种子粒度处理,研究各处理对棉花苗期生长发育的影响。[结果]结果表明,3个处理的发芽势以小粒种子较高;大而饱满种子的叶面积和干物重最大,幼苗初期生长和整齐度都优于大而不饱满的种子和小粒种子。各粒度棉苗的株高无明显差异。大而饱满的种子净光合速率与大而不饱满的种子无明显差异,小种子的稍低。主茎叶可溶性蛋白、淀粉和糖含量无明显差异。[结论]作物种子饱满程度对植株的生长有巨大影响。

Effect seed Size on the Plant Growth at Seedling Stage in Cotton

[Objective]The purpose was to further discuss the effect of seed size on the plant growth at seedling stage in cotton.[Method]The effects of seed size from Bt transgenic cotton(var.33B) on the plant growth at seedling stage was researched under the different experiment treatments.[Result] The results indicated that the germination tendencies of small seed was higher,but leaf area and dry matter weight of the big-plump seeds were biggest than other processings.The seedling initial period growth and the uniformity degree of big-plump seeds surpassed big and not full seed and the small seed.Plant height of various granularity had noo significant difference.Net photosynthesis between the big-plump seeds and big and not full seed had no obvious difference,small seed slightly lowed.Main stalk leaf protein,main stalk leaf starch and main stalk leaf sugar content of 3 processings had no obvious difference.[Conclusion]The crop seed full degree has the enormous influence on the plant growth.