벼의 생식생장기 일조부족이 생육 및 수량에 미치는 영향

Seonghak Lee; Eunho Son; Seongchang Hong; SungHwan Oh; JiYoon Lee; Jonghyun Park; Sunhee Woo; Chulwon Lee

doi:10.7740/kjcs.2016.61.2.087

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Original Research Article

벼의 생식생장기 일조부족이 생육 및 수량에 미치는 영향 Growth and Yield Under Low Solar Radiation During the Reproductive Growth Stages of Rice Plants

30 June 2016. pp. 87-91

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Abstract

Recently, rice growth and production have been influenced by climatic change worldwide. In particular, under low solar radiation and cloudy weather, rice plants show abnormal physiological responses. In this experiment, plants of the rice cultivar Samgwangbyeo grown 40% and 70% shading and natural conditions at the primordium initiation stage (PI) for 30 days and the booting stage for 10 days up to heading were compared. After shading treatments, culm lengths were significnatly longer than that in natural condition plots, and panicle lengths were shorter in the 40% and 70% shading treatment plots compared to control plots. After heading, the production of dry matter treated at the PI stage was significantly lower than that at the booting stage. SPAD values of the leaf color and N concentration of leaves treated with shading were greater than those under natural conditions. In the shading treatment, the lodging index at 20 days after heading was significantly higher than that in natural condition. For yield components, number of panicles, spikelet number per panicle, and ripened grain ratio significantly decreased with shading treatment; thus, rice yield decreased significantly. For rice quality, the protein content of the head rice treated with shading was significantly higher than that in the control plot, but the amylose content of rice treated with shading was signifiantly lower than that in rice in control plots.

Keywords

lodging index

low solar radiation

rice quality

SPAD value

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 61
No :2
Pages :87-91
Received Date : 2016-05-24
Revised Date : 2016-06-08
Accepted Date : 2016-06-08
DOI :https://doi.org/10.7740/kjcs.2016.61.2.087

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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인용문헌(References)