Photosynthetic characteristics of non-leaf organs of winter wheat cultivars differing in ear type and their relationship with grain mass per ear
Photosynthetic characteristics of non-leaf organs of winter wheat cultivars differing in ear type and their relationship with grain mass per ear
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DOI：
10.1023/a:1013743523029
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发表时间：
2001-01-01
期刊：
影响因子：
2.7
通讯作者：
Zheng, DM
中科院分区：
文献类型：
--
作者：
Wang, ZM;Wei, AL;Zheng, DM
测定了大穗型（pin7）和小穗型（ND93）小麦叶片、叶鞘、花梗和穗部器官的叶绿素含量、光系统2功能（F-v/F-m、F-v/F-0）、核酮糖-1,5-二磷酸羧化酶/加氧酶活性和净光合速率（P-N）。不同绿色植物部位的光合特性存在一定差异，穗部各参数值Pin7均高于ND93。此外，26个小麦基因型的穗表面积和穗磷氮均与穗粒质量呈极显著正相关。因此，大穗型品种的光合作用能力越强，籽粒产量越高。
Chlorophyll content, photosystem 2 functioning (F-v/F-m, F-v/F-0), activity of ribulose-1,5-bisphosphate carboxylase/oxygenase, and net photosynthetic rates (P-N) of flag leaf blade, sheath, peduncle, and ear organs were assessed in large-ear type (Pin 7) and small-ear type (ND93) wheat cultivars. Some differences were found in photosynthetic properties between different green plant parts, the values of all studied parameters in ear parts being higher in Pin7 than in ND93. Furthermore, ear surface areas and ear P-N in 26 wheat genotypes measured at anthesis showed highly significant positive correlation with grain mass per ear. Hence a greater capability of car photosynthesis may result in a greater grain yield in large-ear type cultivars.