《植物生理学报》 2011, 47(4): 356-362

不同时期叶喷植物生长调节剂对大豆花荚脱落率及多聚半乳糖醛酸酶活

宋莉萍¹, 刘金辉², 郑殿峰^1,*, 冯乃杰¹

1黑龙江八一农垦大学农学院, 黑龙江大庆163319; 2大庆多田野进口吊车大修厂, 黑龙江省大庆163355

通信作者：郑殿峰；E-mail: zdffnj@263.net；Tel: 0459-6819175

摘　要：

在大田条件下, 以大豆品种‘合丰50’为材料, 比较研究了在V3 (第3节龄期, 三叶期)、R1 (初花期)和R3 (始荚期)期叶 面喷施DTA-6、S3307和TIBA三种植物生长调节剂对大豆花荚脱落率及多聚半乳糖醛酸酶活性的影响。结果表明: V3期叶 喷TIBA、S3307、DTA降低了大豆花荚脱落率, 降低了大豆花荚和脱落花荚多聚半乳糖醛酸酶活性; R1期叶喷植物生长调节 剂显著降低了大豆花荚及脱落花荚中多聚半乳糖醛酸酶活性, 以DTA-6调控效果最佳, S3307次之; R3期叶喷植物生长调节剂 降低了大豆荚及落荚的多聚半乳糖醛酸酶活性, 以DTA-6调控效果最佳, TIBA次之。综合分析表明, V3、R1和R3期叶面喷 施植物生长调节剂能够降低大豆花荚脱落率及多聚半乳糖醛酸酶活性, 对大豆花荚的脱落有一定的调控作用, 有利于提高 产量, 其综合调控效果为, V3期: S3307>DTA-6>TIBA>CK; R1期: DTA-6>TIBA>S3307>CK; R3期: DTA-6>TIBA>S3307>CK。

关键词：大豆; 植物生长调节剂; 花荚; 脱落率; 多聚半乳糖醛酸酶

收稿：2010-12-24   修定：2011-02-26

Effects of Different Plant Growth Regulators on Abscission Rate and Polygalacturonase Activities of Soybean Flowers and Pods by Spraying in Different Stages

SONG Li-Ping¹, LIU Jin-Hui², ZHENG Dian-Feng^1,*, FENG Nai-Jie¹

¹College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China;²Daqing Tadano Import Crane Large-Scale Repair Shop, Daqing, Heilongjiang 163355, China

Corresponding author: ZHENG Dian-Feng; E-mail: zdffnj@263.net; Tel: 0459-6819175

Abstract:

The effects of three plant growth regulators (PGRs) of TIBA, S₃₃₀₇ and DTA-6 on abscission and polygalacturonase (PG) activities of soybean flowers and pods were investigated by spraying in V3 (third-node stage), R1 (beginning bloom stage) and R3 (beginning pod stage) stages, respectively, and under the field planting conditions. Glycine max (L.) Merr. cv. ‘Hefeng50’ was used as the experimental material. The results showed that: the rate of abscission of soybean flowers and pods was lowered by spraying TIBA, S₃₃₀₇ and DTA-6 in all the stages; The PG activities of soybean flowers and pods were decreased after spraying TIBA, S₃₃₀₇ and DTA-6 in V3 stage; Plant growth regulators decreased PG activity significantly after spraying at R1 stage and the regulation effect of DTA-6 was the best. Plant growth regulators decreased PG activity in pod and abscission pod after spraying at R3 stage and the regulation effect of TIBA was the best. In conclusion, the comprehensive regulation effect is S₃₃₀₇>DTA-6>TIBA>CK in V3 stage; DTA-6>TIBA>S₃₃₀₇>CK in R1 stage; DTA-6>TIBA>S₃₃₀₇>CK in R3 stage.

Key words: soybean; plant growth regulators; flowers and pods; abscission rate; polygalacturonase