【摘要】 探明持绿型小麦品种川农18(CN18)、川农12(CN12)、川农17(CN17)和常规品种绵阳11(MY11)之间的差异,采用了在抽穗后不同时期剪去旗叶的方法,测定了在开花后不同时期小麦旗叶、倒二叶、倒三叶叶绿素含量、超氧化物歧化酶活性、过氧化氢酶活性、丙二醛含量并且测定了在各处理下植株的千粒重。结果表明,持绿型小麦品种植株抗衰老,光合作用时间长,籽粒具有较高的生长率,因此具有较高的千粒重,除旗叶外,倒二叶、倒三叶对子粒重也具有很强的补偿作用。"库"的强度很可能是限制持绿型小麦超高产的主要原因。更多还原

【Abstract】 In order to understand the difference between the green-keeping wheat,including Chuannong18(CN18),Chuannong12(CN12),ChuanNong17(CN17) and common wheat Mianyang11(MY11),the flag leaf were respectively clipped in different period.the content of chlorophyll,superoxide dismutase activity(SOD),catalase acticity(CAT),the content of malondialdehyde(MDA) of flag leaf,second leaf from top as well as third leaf from top were measured.The 1000-grain weight under the condition of clipping the flag leaf of the CN18,CN12,CN17 and Mianyang11(MY11) were measured in different periods.The result showed that,green-keeping wheat could stave off senescence with longer period of photosynthesis,the growth rate of the seed was upper,and the flag leaf,the second leaf from top and the third leaf from top had more contribution to the weight compared with the common wheat.The yield of green-keeping wheat was most likely to be limited by the ’sink’.更多还原