|Table of Contents|

Study on Response Differences to Potassium Nutrition in Leaf Endogenous Hormone Dynamic Changes of Vegetable Soybean and Grain Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2016年06期
Page:
969-974
Research Field:
Publishing date:

Info

Title:
Study on Response Differences to Potassium Nutrition in Leaf Endogenous Hormone Dynamic Changes of Vegetable Soybean and Grain Soybean
Author(s):
TU Bing-jie1; 2;  LIU Chang-kai1; 2;  TIAN Bo-wen1; 2;  LI Yan-sheng2;  ZHANG Qiu-ying2;  LIU Xiao-bing1; 2;  LI Rui1; 2;  YANG Yue1; 2
（1.College of Natural Resources and Environment, Northeast Agricultural University, Harbin 150030, China; 2. Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China）
Keywords:
Potassium fertilization;  Endogenous hormones;  Leaf;  Vegetable soybean
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2016.06.0969
Abstract:
This research aimed to find out the responses of endogenous hormones to potassium application during seeds filling between vegetable soybean and grain soybean leaf. Three semi determinate soybean cultivars were used in the experiment, which were Line 121, Zhongkemaodou 1 and Dongsheng 7. Three potassium(K) fertilization treatments were imposed including No K application(K0), 120 kg K2SO4ha-1at seeding(K1), and 120 kg K2SO4ha-1 at seedling+1% K2SO4 foliar application at flowering(K2). The endogenous plant hormone analysis was carried out with Enzyme-linked immunosorbent assay(ELISA). The results showed that: There was an obvious difference in content of IAA，GA，ZR and ABA between vegetable soybean and grain soybean leaf from 4 to 8 weeks after flowering while the dynamic change of GA and ZR had the opposite trend.The potassium fertilizer increased the content of IAA, GA and ZR(K2>K1>K0), but reduced the ABA content(K0>K1>K2) in vegetable soybean leaf. However, the response of grain soybean was different from that of vegetable soybean (K1>K2>K0). Same differences(K0>K1>K2) were found for ABA content in vegetable soybean and grain soybean leaf. Potassium fertilizer increased the ratio of IAA/ABA, GA/ABA and ZR/ABA, which might be a partial mechanism involved in K nutrition to improve the yield and quality of soybean.

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Last Update: 2016-12-09