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不同水分条件下水稻籽粒形态及其与粒重的关系
引用本文:张卫星,朱德峰,徐一成,林贤青,张玉屏,陈惠哲,赵致,周平.不同水分条件下水稻籽粒形态及其与粒重的关系[J].作物学报,2008,34(10):1826-1835.
作者姓名:张卫星  朱德峰  徐一成  林贤青  张玉屏  陈惠哲  赵致  周平
作者单位:1 中国水稻研究所, 浙江杭州310006; 2 贵州大学, 贵州贵阳550025; 3 浙江理工大学视觉检测研究所, 浙江杭州310006
基金项目:农业部重大专项基金,农业部重大专项基金,农业部重大专项基金
摘    要:运用机器视觉检测技术, 以普通杂交稻汕优63和超级杂交稻国稻6号为材料, 在幼穗分化开始至分化后30 d分别设置不同的控水处理, 通过水分仪结合称重法控制土壤含水量, 研究了稻穗及穗上不同部位籽粒的形态性状, 并分析各性状与粒重的关系。结果表明:水稻的籽粒面积、长度及千粒重对水分反应较明显, 水分亏缺对籽粒面积和粒重的影响引起比粒重(单位籽粒面积的重量)变化, 长宽比对水分也有一定反应, 宽度对水分的响应因品种而异。籽粒形态性状、产量及其构成因素均随水分亏缺的加重而有不同程度下降, 穗生长发育全阶段的控水处理影响最大, 其次是中期的重度和中度控水处理以及前期、后期的重度控水处理, 各时段控水对不同部位籽粒形态的影响与穗分化发育的顺序历期基本吻合。除粒宽与其他形态性状之间呈极显著或显著负相关以外, 其余各籽粒形态性状之间均呈极显著正相关。籽粒面积、长度及长宽比与千粒重之间存在极显著或显著的相关关系, 可以作为水稻抗旱性鉴定有效的籽粒形态指标。

关 键 词:土壤水分  水稻  视觉检测技术  籽粒形态  粒重
收稿时间:2008-02-28
修稿时间:1900-01-01

Grain Morphological Traits Measured Based on Vision Detection Tech-nology and Their Relation to Grain Weight in Rice under Different Water Condition
ZHANG Wei-Xing,ZHU De-Feng,XU Yi-Cheng,LIN Xian-Qing,ZHANG Yu-Ping,CHEN Hui-Zhe,ZHAO Zhi,ZHOU Ping.Grain Morphological Traits Measured Based on Vision Detection Tech-nology and Their Relation to Grain Weight in Rice under Different Water Condition[J].Acta Agronomica Sinica,2008,34(10):1826-1835.
Authors:ZHANG Wei-Xing  ZHU De-Feng  XU Yi-Cheng  LIN Xian-Qing  ZHANG Yu-Ping  CHEN Hui-Zhe  ZHAO Zhi  ZHOU Ping
Institution:1 China National Rice Research Institute, Hangzhou 310006, Zhejiang; 2 Guizhou University, Guiyang 550025, Guizhou; 3 Vision Detection Institute of Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China
Abstract:Based on machine vision detection technology, with Shanyou 63 (a representative common hybrid rice) and Guodao 6 (a super hybrid rice) as experiment materials, designed different water treatment from beginning to 30 days after panicle initiation and determined soil moisture by W.E.T Sensor (ML2x type, made in USA) and electronic balance (made in Shanghai, China), the grain morphological traits of full panicle and different position within a rice panicle under different water condition was studied, the relationship among these traits and their relation to grain weight was analyzed. The results indicated that the response of grain length, projective area, and 1000-grain weight to soil moisture was more obvious, the change of GRWA (ratio of grain weight to area) was caused by the effect of water deficit on grain area and weight, the response of ratio of grain length to width manifested complexity in a certain extent, and that of grain width to water was different in Shanyou 63 and Guodao 6. The grain morphologi-cal traits, yield and its components showed a drop trend of different extent with enhanced degree of water deficit, these grain morphological traits and grain weight reduced observably while controlling soil moisture from beginning to 30 days after panicle initiation, the effect of water deficit was most significant during 0–30 d control water, secondary, during 10–20 d heavy or middle water deficit and 0–10 d or 20–30 d heavy water deficit. The expressive laws of the effect of controlling water at different stage on grain morphological traits and weight of different position within a panicle was basically inosculated with the order of panicle initiation, growth and development. Among these morphological traits (except for width) all showed significant positive correla-tion at 0.01 probability level, while the relationship of grain width with other morphological traits was significant negative corre-lation at 0.01 or 0.05, respectively. The correlativity existed significantly between grain weight and grain length, projective area and ratio of grain length to width at 0.01 or 0.05, respectively. Therefore, the three traits can be used as grain morphological effec-tive index to appraise drought-resistance in rice.
Keywords:Soil water  Rice (Oryza sativa L  )  Vision detection technology  Grain morphology  Grain weight
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