|Table of Contents|

Effect of NAA on Growth and Photosynthetic Characteristic of Soybean Seedling under Drought and Re-watering(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2011年01期
Page:
50-55
Research Field:
Publishing date:

Info

Title:
Effect of NAA on Growth and Photosynthetic Characteristic of Soybean Seedling under Drought and Re-watering
Author(s):
LIANG Peng XING Xing-hua ZHOU Qin HAN Liang-liang TIAN Yi-dan ZHANG Guo-zheng XING Han JIANG Hai-dong
Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing 210095, Jiangsu, China
Keywords:
NAA Drought Re-watering Soybean seedling Growth Photosynthetic characteristic
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2011.01.0050
Abstract:
Soybean (Glycine max var.Nannong99-6) was used to study the effects of α-naphthaleneacetic acid (NAA) on growth and photosynthetic characteristic of seedling under drought and re-watering with pot experiment. The results showed that drought inhibited the growth of soybean seedling. The increasing rate of biomass and leaf area decreased. Leaf relative water content, chlorophyll content, photosynthesis rate (Pn), stomata conductance to CO2 (Gs), intercellular CO2 concentration (Ci) and transpiration rate (Tr) all decreased sharply. After re-watering, the increasing rate of biomass and leaf area increased. chlorophyll content, leaf relative water content, Pn, Gs, Ci and Tr all increased rapidly and almost restored to the normal level at the final stage of experiment. Pre-treatment of NAA alleviated the decrease of the increasing rate of biomass and leaf area, leaf relative water content, chlorophyll content, Pn, Gs, Ci and Tr during drought stress time. And after re-watering, it also promoted the restore of soybean and increased physiological index as compared with drought treatment. It showed that NAA could effectively enhance the ability of drought resistance in soybean at seedling stage.

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Last Update: 2014-09-11