摘要
为了解木质素含量在不同品种不同时期的变化过程,以‘金丝小枣’和‘金丝无核小枣’为试验材料,利用Klason法测定枣果实内木质素含量和木质素的显色反应,研究枣果实内木质素沉积的动态变化。结果显示：枣果实中内果皮的木质素沉积过程是从基部开始,完成内果皮最内侧的木质化,再由内至外,逐渐完成;在花后15~25天期间,‘金丝小枣’与‘金丝无核小枣’果实内果皮木质素含量基本相同,从花后40天开始,‘金丝小枣’内木质素含量开始上升并超过‘金丝无核小枣’。‘金丝无核小枣’果实内木质素含量在全果实发育时期内变化总体趋势平缓,而在‘金丝小枣’内木质素含量的在15~75天期间变化增加明显,在75天后出现跳跃式增长现象,增加更为明显。试验选用的2个品种枣在内果皮木质化过程中存在着明显的差异,可以用来进行枣果实内果皮木质化的相关研究。
To understand the change of lignin content and endocarp lignin deposition process in different periods of different cuhivars, ‘Jinsixiaozao＇ and ‘Jinsiwuhexiaozao＇ were used as the test materials, the lignin content in jujube fruit was measured by the Klason method and the distribution of lignin was observed by color reaction between the phloroglucinol and lignin for the purpose of researching the dynamic changes of lignin deposition in jujube fruit. The results showed that： in jujube fruit the endocarp lignin deposition process was from the base, after the lignification of medial peel was completed, the lignification was achieved from the inside to the outside until gradually accomplished; during 15-25 days after flowering, the lignin content in ‘Jinsixiaozao＇ and ‘Jinsiwuhexiaozao＇ fruit was basically the same, and starting from the 40 days after flowering, the lignin content in ＇Jinsixiaozao＇ fruit began to rise and exceeded the lignin content in ‘Jinsiwuhexiaozao＇ fruit; the change of the lignin content in ‘Jinsiwuhexiaozao＇ fruit was smooth within all fruit development period, and that in ‘ Jinsixiaozao＇ fruit increased obviously during 15-75 days, after 75 days the lignin content showed a leap in growth and increased more significantly. There are significant differences in the process of lignification between the two cultivars of jujube in the experiment, so they can be used for related research on jujube fruit endocarp lignification.
出处
《农学学报》
2016年第2期82-87,共6页
Journal of Agriculture
基金
北京市2015人才培养质量提高经费(科研)-团队支持计划"植物源农药"(KCT2014001)
北京市2014人才培养质量提高经费(科研)-团队支持计划"植物源农药"(KCT2015007)
关键词
枣果实
内果皮
木质素沉积
Jujube Fruit
Endocarp
Lignin Deposition
