
乙烯利调控橡胶树胶乳产量和品质的阈值分析
刘明洋, 杨洪, 樊松乐, 郭冰冰, 代龙军, WITTAYA Prommee, 王立丰
乙烯利调控橡胶树胶乳产量和品质的阈值分析
Threshold Analysis of Ethephon to Control the Yield and Quality of Latex of Hevea brasiliensis
分析乙烯利(ETH)、乙烯利抑制剂1-甲基环丙烯(1-MCP)和半胱氨酸(CYS)对橡胶树胶乳产量和主要品质指标的影响,并计算剂量阈值。采用优化的正交试验设计分析三因素(ETH,1-MCP,CYS),四水平(3种试剂各4个含量),共14个处理,用于涂施橡胶割面橡胶树割面,分别测定橡胶树胶乳产量、干胶含量(干含)、分子量、塑性初值、塑性保持率和门尼黏度等关键指标,并分析指标之间的相关性。结果表明,14个处理橡胶树后产量、干含等均存在显著差异。相关分析表明数均分子量与重均分子量、门尼黏度正相关,相关系数分别为0.71和0.83,与多分散性负相关,相关系数为-0.91。塑性初值与门尼黏度正相关,相关系数为0.73。多分散性与门尼黏度负相关,相关系数为-0.89。分别建立以干含等指标为核心的回归方程,计算出的乙烯利的最高体积分数是0.15%,1-MCP的最高体积分数是1.08%,CYS的质量浓度是0.41 g/L。优化的正交试验方法可有效地计算排胶调节剂的阈值,为后续试验提供理论和实践指导。
The effects of ethephon (ETH), ethephon inhibitor 1-methylcyclopropene (1-MCP) and cysteine (CYS) on the yield and main quality indexes of rubber tree latex were analyzed, and the dosage threshold was calculated. An optimized orthogonal experimental design was used to analyze 14 treatments with three factors (ETH, 1-MCP, CYS) and four levels (four concentrations of each reagent) for applying rubber tree cut surfaces. Key indicators such as rubber latex yield, dry rubber content, molecular weight, initial plasticity value, plasticity retention index and Mooney viscosity were measured, and the correlation between the indicators was analyzed. The results showed that there were significant differences in yield and dry rubber content of 14 treated rubber trees. Correlation analysis showed that the number-average molecular weight was positively correlated with the weight-average molecular weight and Mooney viscosity, and the correlation coefficient was 0.71 and 0.83, respectively, and the correlation coefficient was negative with the polydispersity indexes, and the correlation coefficient was -0.91. Initial plasticity value was positively correlated with Mooney viscosity, and the correlation coefficient was 0.73. The polydispersity indexes was negatively correlated with Mooney viscosity with the correlation coefficient -0.89. The regression equations based on dry rubber content index were established respectively. The maximum concentration of ethephon, 1-MCP and CYS were 0.15%, 1.08% and 0.41 g/L, respectively. The optimized orthogonal test method can effectively calculate the threshold of the regulator and provide theoretical and practical guidance for the subsequent experiments.
橡胶树 / 乙烯利 / 1-甲基环丙烯 / 阈值 / 相关分析
Hevea brasiliensis / ethephon / 1-methylcyclopropene / theshold / correlation analysis
S794.1
1 |
王向军,东婉茹,许民.丙二醇/纳米铜锌防腐剂/单宁-硼酸协效改性橡胶木研究[J].森林工程,2024,40(5):156-163.
|
2 |
|
3 |
|
4 |
陈海芳,张华平,陈旭国.天然橡胶分子量、分子量分布及其性能的研究[J].广西热带农业,2008(3):9-12.
|
5 |
王开典.不同品系天然橡胶特性的研究[D].海口:海南大学,2014.
|
6 |
|
7 |
|
8 |
|
9 |
郭冰冰,刘明洋,代龙军,等.植物激素调控橡胶树产排胶机制研究进展[J].植物研究,2024,44(2):161-167.
|
10 |
|
11 |
|
12 |
高新生,李维国,和丽岗,等.优良品种热研8-79在云南勐腊农场试种初报[J].热带农业科学 2015,35(12):35-40.
|
13 |
曾霞,张福全,周世俊,等.橡胶树种质的分子量与分布差异及年度变化研究[J].南方农业学报,2020,51(12):3004-3012.
|
14 |
张晓飞,黄肖,李维国.4个引进橡胶树胶木兼优品种比较试验[J].热带作物学报,2023,44(3):526-534.
|
15 |
刘辉,胡义钰,冯成天,等.乙烯利过度刺激诱发橡胶树死皮的生理效应[J].林业科学,2021,57(6):46-55.
|
16 |
何晶,冯成天,郭秀丽,等.高浓度乙烯利刺激诱导橡胶树死皮发生过程中的胶乳生理研究[J].西北林学院学报,2018,33(2):123-128.
|
17 |
|
18 |
|
19 |
|
20 |
|
21 |
|
22 |
|
23 |
|
24 |
|
25 |
陈力维,令阳,邓丽莉,等.L-半胱氨酸处理对采后青脆李果实苯丙烷代谢的影响[J].农业工程学报,2020,36(13):257-263.
|
26 |
额日赫木,王梦茹,张芳,等.真空浸渍辅助L-半胱氨酸处理对贮藏期鲜切马铃薯的护色作用[J].食品研究与开发,2020,41(14):28-33.
ERIHEMU,
|
27 |
邓颖怡,方跃凯,黄成将,等.L-半胱氨酸盐酸盐处理延缓香蕉果实采后成熟的初步研究[J].保鲜与加工,2020,20(4):44-49,56.
|
28 |
君轩.橡胶的分子量和分子量分布[J].世界橡胶工业,2010,37(11):47-48.
JUN X.Molecular weight and molecular weight distribution of rubber[J].World Rubber Industry,2010,37(11):47-48.
|
29 |
岩利,姜士宽,徐荣,等不同品系天然橡胶分子量及其性能 [J].弹性体,2023,33(6):16-21.
|
/
〈 |
|
〉 |