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Analysis of Sugars and Fatty Acids during Haustorium Development and Seedling Growth of Coconut

文献类型： 外文期刊

作者： Li, Jing 1 ; Htwe, Yin Min 2 ; Wang, Yong 2 ; Yang, Yaodong 2 ; Wu, Yi 2 ; Li, Dongxia 2 ; Kareem, Abdul 2 ; Wang, Rencai 1 ;

作者机构： 1.Hunan Agr Univ, Hort & Landscape Coll, Changsha 410128, Hunan, Peoples R China

2.Chinese Acad Trop Agr Sci, Coconut Res Inst, Wenchang 571339, Peoples R China

3.Minist Educ, Biotechnol Res Dept, Kyaukse 100301, Myanmar

4.Pir Mehr Ali Shah Arid Agr Univ, Dept Hort, Rawalpindi 46300, Pakistan

期刊名称：AGRONOMY JOURNAL （ 影响因子：2.24； 五年影响因子：2.829 ）

ISSN： 0002-1962

年卷期： 2019 年 111 卷 5 期

页码：

收录情况： SCI

摘要： Haustorium absorbs energy from the endosperms (liquid and solid) and plays a key role in nutrient mobilization during coconut germination and seedling growth. This study was conducted to shed light on possible interactions between haustorium and endosperms during this process. Germination rates and morphological changes of coconut cultivars Hainan Tall (HT) and Red Dwarf (RD), as well as the profiles of sugars and fatty acids in endosperms and haustorium were also analyzed. Results showed that liquid and solid endosperm inside the coconut exhausts successively, while haustorium occupies the nut gradually. Haustorium had significant positive correlation with seedling, while it had significant negative correlation with liquid and solid endosperms. Sugars in liquid endosperm continuously decreased, whereas in solid endosperm and haustorium accumulated at early stages and decreased later along with the aggressive seedling growth. Fatty acids in solid endosperm shared a very similar trend with sugars. In conclusion, haustorium development and seedling growth mainly depend on the nutrients stored in the liquid endosperm at early stages and then depend on the solid endosperm, in which fatty acids degrade rapidly to sugar so as to provide enough energy. These findings could be applicable in coconut germination and seedling propagation.

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