Assessing of the contributions of pod photosynthesis to carbon acquisition of seed in alfalfa (Medicago sativa L.)
文献类型： 外文期刊
作者： Zhang, Wenxu 1 ; Mao, Peisheng 2 ; Li, Yuan 3 ; Wang, Mingya 2 ; Xia, Fangshan 2 ; Wang, Hui 2 ;
作者机构： 1.Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Ecoenvironm Related Polymer Mat, Key Lab Gansu Polymer Mat,Minst Educ China, Lanzhou 730070, Peoples R China
2.China Agr Univ, Inst Grassland Sci, Beijing 100193, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Dryland Farming Inst, Hengshui 053000, Peoples R China
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2017 年 7 卷
页码：
收录情况： SCI
摘要： The distribution of carbon from a branch setting pod in alfalfa was investigated during the seed development of seeds to determine the relative contribution of pod and leaf photoassimilates to the total C balance and to investigate the partitioning of these photoassimilates to other plant organs. A (13)Clabeling procedure was used to label C photoassimilates of pods and leaves in alfalfa, and the Delta C-13 values of a pod, leaves, a section of stem and roots were measured during seed development on day 10, 15, 20 and 25 after labeling of the pod. The results showed that the alfalfa pod had photosynthetic capacity early in the development of seeds, and that pod photosynthesis could provide carbon to alfalfa organs including seeds, pods, leaves, stems and roots, in addition to leaf photosynthesis. Photosynthesis in the pod affected the total C balance of the alfalfa branch with the redistribution of a portion of pod assimilates to other plant organs. The assimilated C-13 of the pod was used for the growth requirements of plant seeds and pods. The requirements for assimilated C came primarily from the young pod in early seed development, with later requirements provided primarily from the leaf.
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