CAJ | 학술논문

[目的]研究不同海拔环境条件下耐冷性粳米淀粉RVA谱特性的变化规律,以及水稻耐冷性对稻米品质的影响,旨在为云南高原粳稻优质耐冷新品种的选育提供科学依据。[方法]以4个强耐冷型粳稻品种和5个弱耐冷型粳稻品种为材料,分别种植于3个不同海拔生态类型的代表点,比较分析云南高原粳稻区不同海拔条件下不同耐冷性粳稻品种的稻米淀粉RVA谱变化特征。[结果]随种植海拔的升高,弱耐冷性品种的消减值明显增大,峰值黏度和崩解值显著减小,而强耐冷品种的峰值黏度和崩解值呈先降后升趋势,消减值的变化则表现先升后降趋势。[结论]强耐冷性品种的稻米淀粉RVA谱特性受海拔变化的影响较弱耐冷性品种小,蒸煮食味品质的变化相对较稳定,但弱耐冷性品种的蒸煮食味品质随海拔升高明显呈变劣趋势。
[목적]연구불동해발배경조건하내랭성갱미정분RVA보특성적변화규률,이급수도내랭성대도미품질적영향,지재위운남고원갱도우질내랭신품충적선육제공과학의거。[방법]이4개강내랭형갱도품충화5개약내랭형갱도품충위재료,분별충식우3개불동해발생태류형적대표점,비교분석운남고원갱도구불동해발조건하불동내랭성갱도품충적도미정분RVA보변화특정。[결과]수충식해발적승고,약내랭성품충적소감치명현증대,봉치점도화붕해치현저감소,이강내랭품충적봉치점도화붕해치정선강후승추세,소감치적변화칙표현선승후강추세。[결론]강내랭성품충적도미정분RVA보특성수해발변화적영향교약내랭성품충소,증자식미품질적변화상대교은정,단약내랭성품충적증자식미품질수해발승고명현정변렬추세。
[Objective] By investigating of change rule rice starch RVA profile properties and the influence of cold tolerance on rice quality,the aim was to provide scientific references to the breeding of new cold-tolerant japonica rice varieties with high quality in the Yunnan plateau.[Method] Four cold-tolerant and five cold-sensitive japonica rice cultivars were grown at three locations with different altitudes in Yunnan plateau to investigate rice starch RVA profile characteristics.[Result] The results showed that with increasing altitude,the setback viscosity in cold-sensitive cultivars increased significantly,while the peak viscosity and breakdown viscosity decreased significantly.However,the peak viscosity and breakdown viscosity in cold-tolerant cultivars initially decreased and then gradually increased with rising altitude,whereas the setback viscosity initially increased and then decreased.[Conclusion] The starch RVA parameters of cold-tolerant cultivars were less sensitive to different environments than those of cold-sensitive cultivars.Cooking and eating quality of cold-tolerant cultivars had relatively stable trends with rising altitude,whereas cooking and eating quality of cold-sensitive cultivars had a trend toward inferior.