棉花矮秆品系的形态学及其解剖结构比较  

Studies on Morphometrics and Cytological Features of Cotton (Gossypium hirsutum) Dwarfing Strains

作　　者：冯秀敏[1] 刘爱玉[1] 陈金湘[1] 易九红[1] 冯正锐[1] 李瑞莲[1] 

机构地区：[1]湖南农业大学棉花研究所,长沙410128

出　　处：《棉花学报》2008年第3期207-211,共5页Cotton Science

基　　金：湖南省自然科学基金项目(06JJ20051;08553079)

摘　　要：以矮秆品系"97004D"和正常品系"97004H"及遗传标准系"TM-1"为材料,从形态学和细胞学研究了棉花高、矮品系的主茎生长动态和茎组织的细胞解剖结构。高、矮秆品系从出苗期到现蕾初期株高无明显差异,现蕾后株高差异逐渐明显,在各个时期97004D与97004H、TM-1主茎节间数、果枝数等无显著差异。茎组织解剖结构观察表明,97004D的茎横切面的薄壁细胞表面积较大,维管束比较少,形成层较发达。TM-1茎的幼嫩部分纵切面的薄壁细胞数量明显多于97004D。而较多的茎细胞不断分裂生长,以至节间迅速伸长,从而导致了节间长度的差异较大。Taking the dwarf line ＂97004D＂, average line ＂97004 H＂, and the genetic standard line ＂TM-1＂ as materials, the growth trend of main stem and the cytological anatomical structure of stem meri- stem 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.

关 键 词：棉花 矮秆 形态学 细胞学 

分 类 号：S562[农业科学—作物学]