植物生长调节剂对枣裂果影响机制的研究

发布时间：2018-06-25 01:07

本文选题：枣 + 裂果　；参考：《山西农业大学》2015年硕士论文

【摘要】：枣果实裂果已经成为山西省枣树产业发展的主要问题,探究枣裂果机制对解决三农问题具有重要意义。有关抗裂新品种选育和应用、抗裂集约经营技术、遮雨棚栽培等方面的研究已相对完善,但有关枣裂果的机理尚未明确。本研究以山西省四种常见枣品种为实验材料,观测枣果裂果期裂果情况及枣果组织结构变化特征揭示影响枣果裂果的影响机制,对枣树喷施5种不同浓度的植物生长调节剂以探究植物生长调节剂对枣裂果的影响。结果表明：1.枣裂果的发生与枣树品种和枣果的生长期有关。不同枣树品种的枣果形态结构存在一定的差异。从幼果期到完熟期,枣果实组织结构发生了明显变化。枣果实裂果一般从转色期开始直到完熟期,枣裂果率会随着成熟度的提高而不断加重,同时枣树裂果情况还会与成熟期天气情况有关。2.枣果裂果率与角质层厚度呈显著性负相关。枣果表皮细胞气孔畸变后的气孔形状大致分为近似圆、椭圆、无规则轮廓3种,气孔发生畸变会影响果肉呼吸作用,使得枣果果肉也发生变质。3.不同浓度的植物生长调节剂会影响枣果细胞的形成和畸变,进而破坏枣果细胞气孔开度。低浓度的植物生长调节剂促进气孔开度的增加,而高浓度的植物生长调节剂抑制气孔开度的增加,低浓度水平的果膜制剂在降低枣裂果率方面更有效。经KT和SA处理的枣果表皮裂果率均明显高于空白处理。
[Abstract]:Jujube fruit cracking has become a major problem in the development of jujube industry in Shanxi Province. It is of great significance to explore the mechanism of jujube fruit cracking in solving the problem of agriculture, rural areas and farmers. The research on breeding and application of new varieties of resistance to crack, intensive management technology of resistance to cracking and cultivation in sheltered shed have been relatively perfect, but the mechanism of fruit cracking of jujube has not been clarified. In this study, four kinds of common jujube varieties in Shanxi Province were used as experimental materials to observe the dehiscence of jujube fruit and the change characteristics of tissue structure of jujube fruit in order to reveal the influence mechanism of jujube fruit dehiscence. Five different concentrations of plant growth regulators were sprayed on jujube trees to explore the effect of plant growth regulators on jujube fruit. The result shows that 1: 1. The occurrence of jujube fruit is related to the variety of jujube and the growing period of jujube fruit. There were some differences in the morphological structure of jujube fruit among different jujube varieties. The tissue structure of jujube fruit changed obviously from young fruit stage to mature stage. The fruit dehiscence of jujube fruit usually begins from the period of color conversion to the period of maturity, and the rate of dehiscence of jujube fruit will increase with the increase of maturity, and the situation of the split fruit of jujube tree will be related to the weather condition of mature period. There was a significant negative correlation between the split rate of jujube fruit and the thickness of cuticle. The stomatal shapes of the epidermal cells of jujube fruit were roughly divided into three types: approximate circle, ellipse and irregular contour. Stomatal aberration would affect the respiration of the flesh of jujube fruit and make the flesh of jujube fruit also degenerate. 3. Different concentrations of plant growth regulators will affect the formation and distortion of jujube fruit cells, and then destroy the stomatal opening of jujube fruit cells. The low concentration of plant growth regulators promoted the increase of stomatal opening, while the high concentration of plant growth regulators inhibited the increase of stomatal opening, and the low concentration of fruit membrane preparation was more effective in reducing the fruit cracking rate of jujube. The rate of epidermal split of jujube fruit treated with KT and SA was significantly higher than that of blank treatment.
【学位授予单位】：山西农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S665.1

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