椰子种质资源脂肪酸性状与SSR标记关联分析  

Association analysis of fatty acid traits and SSR markers in coconut germplasm resources

作　　者：张照华 李和帅[1] 周德 弓淑芳 刘蕊[1] ZHANG Zhaohua;LI Heshuai;ZHOU De;GONG Shufang;LIU Rui(Coconut Research Institute,Chinese Academy of Tropical Agricultural Sciences,Wenchang,Hainan,571339,China;College of Tropical Crops,Yunnan Agricultural University,Puer,Yunnan,665099,China)

机构地区：[1]中国热带农业科学院椰子研究所,海南文昌571339 [2]云南农业大学热带作物学院,云南普洱665099

出　　处：《中国南方果树》2025年第1期60-65,共6页South China Fruits

基　　金：海南省自然科学基金青年基金项目(321QN342);中央级公益性科研院所基本科研业务费专项(1630152022001);国家热带植物种质资源库椰子种质资源分库(NTPGRC2024-017);海南省自然科学基金面上项目(320MS112)资助。

摘　　要：椰子是热带重要的果树和木本油料作物。椰子是中链脂肪酸的主要来源,但椰子脂肪酸积累的机制尚不清楚,制约了椰子脂肪酸品质的改良。为了发掘我国椰子种质资源脂肪酸性状相关分子标记,开展150份椰子种质资源的脂肪酸性状变异分析和SSR标记的关联分析。结果表明,供试种质椰肉脂肪酸组分包含己酸、辛酸、癸酸、月桂酸、肉豆蔻酸、棕榈酸、硬脂酸、油酸、亚油酸;其中,己酸的变异系数最大,为33.00%。与含油量相关联的分子标记WC3271,与月桂酸含量相关联的分子标记WC1028,可以作为椰子脂肪酸改良的候选分子标记。Coconut is an important fruit and woody oil crop in the tropics.Coconut is the main source of medium chain fatty acids,but the mechanism of fatty acid accumulation in coconut is unclear,which restricts the improvement of fatty acid quality of coconut.In order to discover molecular markers related to fatty acid traits in coconut germplasm resources in China,variation analysis of fatty acid traits and association analysis of SSR markers were conducted on 150 coconut germplasm resources.The results showed that the fatty acid composition of the tested coconut germplasm resources included caproic acid,caprylic acid,capric acid,lauric acid,myristic acid,palmitic acid,stearic acid,oleic acid,and linoleic acid.The variation coefficient of caproic acid was 33.00%,which was the largest.The molecular marker of WC3271,associated with oil content,and WC1028,associated with lauric acid content,could be used as candidate molecular marker for the improvement of coconut fatty acids.

关 键 词：椰子 脂肪酸 中链脂肪酸 正相关 SSR 品种改良 

分 类 号：S667.4[农业科学—果树学]