
Threshold Analysis of Ethephon to Control the Yield and Quality of Latex of Hevea brasiliensis
LIU Mingyang, YANG Hong, FAN Songle, GUO Bingbing, DAI Longjun, WITTAYA Prommee, WANG Lifeng
Threshold Analysis of Ethephon to Control the Yield and Quality of Latex of Hevea brasiliensis
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.
Hevea brasiliensis / ethephon / 1-methylcyclopropene / theshold / correlation analysis
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.
|
/
〈 |
|
〉 |