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棉 花 学 报 Cotton Science 2008，20(3)：207-211
Studies on Morphometrics and Cytological Features of Cotton （Gossypium hirsutum） Dwarfing Strains Abstract：Taking the dwarf line“97004D”, average line“97004H”,and the genetic standard line“TM-1”as materials, the growth trend of main stem and the cytological anatomical structure of stem meristem were studied.The height of cotton plant has no prominent difference among 97004D, 97004H, and TM-1,from seedling to the squaring period，but there has difference in the height of plant after the squaring stage. There were no prominent difference in number of main stem internode and fruiting shoot among 97004D, 97004H and TM-1 in every period. Cytological research showed that ： there have characteristics compared with TM-1 in transverse section of stem in 97004D,such as bigger surface area of parenchyma cell, less number of vascular bundle,and more developed cambium,etc. There are more parenchyma cells of infant stem in TM-1 than 97004D,and these parenchyma cells start to develop at the first period and speed up the growth. The internode length of stem elongated because of many stem cells unceasing mitosis and growth.
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