文献类型：期刊文献

中文题名：油茶果皮发育及粗纤维成分积累与内源激素的关系

英文题名：Relationship between pericarp development and accumulation of crude fibre content and endogenous hormones of Camellia oleifera

作者：陈丹阳[1,2] 晏巢[1,3] 曹林青[1,3] 黄细乃[4] 陈银霞[5] 何铁定[1] 葛晓宁[1,3] 袁雅琪[1,3] 钟秋平[1,3]

第一作者：陈丹阳

机构：[1]中国林业科学研究院亚热带林业实验中心,江西分宜336600;[2]南京林业大学,江苏南京210037;[3]油茶资源培育与利用江西重点实验室,江西分宜336600;[4]茶陵县林业局,湖南茶陵412400;[5]江西省林业科技推广和宣传教育中心,江西南昌330299

年份：2025

卷号：45

期号：4

起止页码：24-37

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：;北大核心:【北大核心2023】；

基金：江西省重点研发计划项目(20223BBF61012);中央级公益性科研院所基本科研业务费专项(CAFYBB2021MA003)。

语种：中文

中文关键词：油茶;果皮发育;粗纤维;内源激素

外文关键词：Camellia oleifera;pericarp development;crude fibre;endogenous hormones

分类号：S794.4

摘要：【目的】研究不同发育阶段油茶果皮形态、木质素等粗纤维成分及内源激素含量的动态变化规律,探讨油茶果皮发育及粗纤维成分积累与内源激素的关系,为培育薄皮、大果、高出油率油茶良种提供理论基础。【方法】以‘长林3号’和‘长林40号’油茶为试材,通过测定不同时期果皮形态指标、果皮粗纤维成分(木质素、纤维素、半纤维素)及5种内源激素含量,探讨2个油茶品种果皮内含物的动态变化规律及其相关性。【结果】‘长林3号’和‘长林40号’油茶果皮鲜质量的生长速率呈慢—快—慢的变化趋势。果皮在4月10日左右完成快速增厚,到6月13日基本不增加,果皮鲜质量在6月上旬才开始快速增加。‘长林3号’和‘长林40号’果皮中半纤维素、木质素、纤维素先后启动快速合成积累过程,启动时间分别为5月20日左右、5月底到6月初、6月13日左右。在快速合成积累的启动时间、达到峰值和结束时间上,2个油茶品种存在差异。相关性分析表明,2个油茶品种的果皮鲜质量、果皮厚度与木质素、纤维素含量均存在较强的正相关关系,与ZT、ABA含量均存在较强的负相关关系。2个油茶品种果皮中ABA、ZT含量均与木质素及纤维素含量呈显著负相关关系。‘长林3号’果皮鲜质量、半纤维素含量与果皮ACC含量呈显著正相关关系,而‘长林40号’果皮厚度与ACC含量呈显著负相关关系。【结论】果皮厚度、果皮鲜质量与木质素等粗纤维含量及ABA、ZT、ACC激素含量相关,木质素的合成积累决定了油茶果皮的厚度,‘长林40号’较‘长林3号’果皮厚度更厚,木质素含量更高,木质素快速合成积累持续时间更长。在果皮增厚基本完成后,果皮鲜质量进入快速增加阶段,油茶果皮鲜质量随着粗纤维的合成积累而增加。‘长林40号’较‘长林3号’果皮鲜质量更大,纤维素、半纤维素、木质素质量及3者组成的粗纤维总质量更大,粗纤维的合成积累对果皮的生长发育至关重要。研究结果可为油茶果皮发育提供理论依据,为培育薄皮大果的油茶良种提供参考。
【Objective】In order to provide a theoretical basis for guiding the cultivation of Camellia oleifera with thin-skinned,large-fruited,and high oil yielding varieties,the dynamic changes of pericarp morphology,lignin and other crude fibre components and endogenous hormone content at different developmental stages C.oleifera were studied,and the relationship between pericarp development,crude fibre component accumulation and endogenous hormones was discussed.【Method】In this study,two varieties of C.oleifera‘Changlin 3’and‘Changlin 40’were used as the research objects,and the morphological indexes of pericarp,pericarp crude fibre content(lignin,cellulose,hemicellulose)and five endogenous hormone content were determined at different times,in order to explore the dynamic changes and its correlation of pericarp content in the two varieties of C.oleifera.【Result】The growth rate of pericarp fresh mass of two varieties of C.oleifera showed a slow-fast-slow trend,and thus divided into three stages of C.oleifera pericarp growth and development,according to the changes in the growth rate of fresh mass of the pericarp,the two cut-off points of the pericarp growth and development process were in early June and early September.According to the pericarp thickness growth rate changes,2 varieties of C.oleifera pericarp growth and development process to April 10th as the boundary were divided into the early and late.The pericarp completed rapid thickening around 10th April,to 13th June pericarp thickness basically did not grow,pericarp fresh mass in early June only began to grow rapidly.The rapid synthesis and accumulation process of hemicellulose,lignin and cellulose in the pericarp of‘Changlin 3’and‘Changlin 40’were initiated successively,and the initiation time was around 20th May,the end of May to the beginning of June,and around 13th June,respectively.The 2 varieties of C.oleifera differed in the time of initiation,peaking and ending of rapid synthetic accumulation.Correlation analysis showed that the fresh mass of the pericarp and pericarp thickness of the two varieties of C.oleifera had strong positive correlations with lignin and cellulose content,and strong negative correlations with the content of ZT and ABA.The content of ABA and ZT in the pericarp of the two varieties of C.oleifera had significant negative correlations with lignin and cellulose content.The fresh mass and hemicellulose content of the pericarp of‘Changlin 3’were significantly positively correlated with the ACC content of the pericarp,while the thickness of the pericarp of‘Changlin 40’was significantly negatively correlated with the ACC content.【Conclusion】The growth and development of C.oleifera pericarp was determined by the synthesis and accumulation of endogenous hormones ABA,ZT,ACC and lignin,cellulose and hemicellulose.The synthetic accumulation of lignin determined the thickness of C.oleifera pericarp,‘Changlin 40’has greater pericarp thickness,higher lignin content and longer duration of rapid synthetic accumulation of lignin than‘Changlin 3’.2 varieties of C.oleifera in the basic completion of the pericarp thickening.C.oleifera pericarp fresh mass entered the stage of rapid growth,and the pericarp fresh mass of C.oleifera pericarp grew with the accumulation of crude fibre synthesis.The fresh mass of the pericarp of‘Changlin 40’is larger than that of‘Changlin 3’,and the mass of cellulose,hemicellulose,lignin,and the total mass of crude fibre composed of the three was larger,and the synthesis and accumulation of crude fibre is crucial to the growth and development of the pericarp.The results of the study can provide a theoretical basis for the development of C.oleifera pericarp,and provide a reference for the cultivation of C.oleifera varieties with thin pericarp and large fruits.