Analysis of Yield and Quality Characteristics of Cultivars of Japonica Fragrant and Soft Rice in Yunnan Province  

云南粳型香软米品种产量和品质特性分析（英文）

作　　者：李农飞 肖俊青 钟丽华 世荣[4] 朱振华[4] 刘慰华[4] 邹茜[4] 寇姝燕[4] 黄望启[4] 苏振喜[4] 

机构地区：[1]江城县农业和科学技术局,云南江城665900 [2]澜沧县富邦乡农业服务中心,云南澜沧665600 [3]元江县农业技术推广站,云南元江653300 [4]云南省农业科学院粮食作物研究所,云南昆明650205

出　　处：《Agricultural Science & Technology》2016年第2期329-333,共5页农业科学与技术（英文版）

基　　金：Supported by Project of Yunnan Provincial Science and Technology Department(2012BB013);National High Technology Research and Development Program of China(863 Program)(2014AA10A603);Technology Innovation Training Project of Yunnan Province(2010CI075)~~

摘　　要：In plateau region of Yunnan Province, japonica rice-growing areas are characterized by high altitude, heavy rain in summer, low temperature and insuffi- cient accumulated temperature in grain-filling stage. In view of the characteristics above, the breeding of japonica soft rice was carried out. In this paper, the yield and quality characteristics of japonica soft rice cultivars bred recently in Yunnan Province were analyzed. The results showed that there was no difference in milling quality, but there were great differences in chemical indexes between soft rice and japonica rice, such as amylose content. For example, in soft rice, the amylose con- tent was significantly lower, but the protein content, gel consistency and taste meter value were significantly higher compared with those in japonica rice. However, there was no significant difference in alkali digestion value between soft rice and japonica rice. The starch RVA profile characteristics of soft rice were significantly better than those of japonica rice. The RVA starch profile of soft rice showed higher maximum viscosity, lower minimum viscosity, higher breakdown value, lower final viscosity, lower setback value and shorter time to reach the maximum viscosity （P〈0.05, P〈 0.01）. The analysis of yield and yield components showed that the yield of japonica soft rice was still lower than that of the control cultivar, which might be caused by weaker tillering capacity, less grains per panicle and lower 1 000-grain weight. In addition, the approaches to improve grain quality and yield of japonica soft rice were also discussed.针对云南高原粳稻区优质米育种面临海拔高、夏季雨水多、气温低,特别是灌浆期气温不足等难点,开展了特色粳型软米(香软米)育种。文章对云南近年选育的粳型软米(香软米)品种进行了产量和品质特性分析。软米和粳米在碾磨品质指标上没有差异,差异主要表现在理化指标上,软米的直链淀粉含量极显著低于粳米,蛋白质含量和胶稠度极显著高于粳米,碱消值差异不显著。软米味度值显著高于粳米。软米的RVA淀粉谱特性优于粳米,表现出最高黏度较高,最低黏度较低,崩解值较高,最终黏度较低,消减值较低,到达最高黏度时间较短,两者存在显著和极显著差异。产量及其构成因子分析表明,产量与高产对照品种比还有一定差距,影响产量提高的因子是分蘖弱、穗总粒数少和千粒重偏低。针对试验结果,对改良云南粳型软米品质和产量途径进行了探讨。

关 键 词：japonica soft rice YIELD Quality 

分 类 号：S511.22[农业科学—作物学]