Analysis of seed production and seed shattering in a new artificial grassland forage: pigeon pea
文献类型： 外文期刊
作者： Li, Xinyong 1 ; Sheng, Wei 1 ; Dong, Qianzhen 1 ; Huang, Rui 1 ; Dong, Rongshu 1 ; Liu, Guodao 1 ; Ding, Xipeng 1 ; Zhang, Jingwen 3 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Crop Genet Resources, Danzhou, Peoples R China
2.Hainan Univ, Coll Trop Crops, Haikou, Peoples R China
3.Hainan Normal Univ, Coll Life Sci, Minist Educ, Key Lab Ecol Trop Isl, Haikou, Peoples R China
关键词： pigeon pea; seed yield; yield component; structural equation model; seed shattering; abscission layer
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 14 卷
页码：
收录情况： SCI
摘要： Pigeon pea is a perennial leguminous plant that is widely cultivated as a forage and pharmaceutical plant in subtropical and tropical areas, especially in artificial grasslands. Higher seed shattering is one of the most important factors in potentially increasing the seed yield of pigeon pea. Advance technology is necessary to increase the seed yield of pigeon pea. Through 2 consecutive years of field observations, we found that fertile tiller number was the key component of the seed yield of pigeon pea due to the direct effect of fertile tiller number per plant (0.364) on pigeon pea seed yield was the highest. Multiplex morphology, histology, and cytological and hydrolytic enzyme activity analysis showed that shatter-susceptible and shatter-resistant pigeon peas possessed an abscission layer at the same time (10 DAF); however, abscission layer cells dissolved earlier in shattering-susceptible pigeon pea (15 DAF), which led to the tearing of the abscission layer. The number of vascular bundle cells and vascular bundle area were the most significant negative factors (p< 0.01) affecting seed shattering. Cellulase and polygalacturonase were involved in the dehiscence process. In addition, we inferred that larger vascular bundle tissues and cells in the ventral suture of seed pods could effectively resist the dehiscence pressure of the abscission layer. This study provides foundation for further molecular studies to increase the seed yield of pigeon pea.
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