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不同类型短季棉品种的离体子叶在暗处理诱导衰老条件下,随着处理时间的延长叶绿素含量逐渐降低;蛋白质含量处理0～1天下降,1～5天又上升,5天后迅速下降;过氧化氢酶(CAT)前3天变化不明显,后期活性下降;超氧化物歧化酶(SOD)活性前5天逐渐升高然后下降;中16两选系(中119和中427)过氧化物酶(POD)活性前3天基本不变,然后逐渐升高,而中10和辽4086前3天迅速升高,随后又迅速下降。短季棉品种在各项指标基本趋势一致的情况下仍存在着显著的差异。早衰型中10,后期各项指标下降速度最快;早熟不早衰型中16(中119与中427),后期下降速度较慢;晚熟型辽4086前期各项指标不高,但后期下降幅度较小,仍能保持较高水平。
The chlorophyll content of detached cotyledons of different types of short season cotton varieties decreased gradually with the prolongation of treatment time under the conditions of dark-treatment-induced senescence. The protein content decreased from day 0 to day 1, increased from day 1 to day 5, and decreased rapidly after day 5; Catalase (CAT) did not change significantly in the first 3 days and then decreased in the late stage; the activity of superoxide dismutase (SOD) increased gradually and then decreased in the first 5 days; The activity of POD remained basically unchanged for 3 days and then gradually increased. However, the rapid increase of POD activity in the first 3 days followed by a rapid decrease in the first 3 days. Short-season cotton varieties in the various indicators of the basic trend of the same circumstances there are still significant differences. Premature decay type 10, the late decline of the indicators of the fastest; precocious early decay in 16 (119 and 427), the late decline slower; late ripe Liao 4086 early indicators are not high, but the latter decline more Small, still maintain a high level.