以10个云南粳稻和6个韩国粳稻品种为材料，研究了不同生态条件对云南和韩国粳稻主要品质及RVA谱特性的影响.结果表明： 云南和韩国粳稻各指标的变异系数均以消减值最大.云南粳稻的粒长、垩白率、直链淀粉含量、蛋白质含量、碱消值、最终黏度、消减值和峰值时间的变异系数明显大于韩国粳稻，而其他品质指标则相反.随海拔升高，云南粳稻的粒长、粒宽、长宽比、精白度、直链淀粉含量、碱消值、最终黏度和回复值及韩国粳稻的粒长、粒宽、精白度、蛋白质含量、最高黏度、热浆黏度和崩解值明显降低，而云南粳稻的垩白率、蛋白质含量、热浆黏度和峰值时间及韩国粳稻的长宽比、直链淀粉含量、碱消值、消减值和回复值明显升高，但韩国粳稻的垩白率无明显变化.云南粳稻的最高黏度、崩解值和糊化温度及韩国粳稻的糊化温度随海拔升高呈先降后升趋势，而云南粳稻的消减值及韩国粳稻的最终黏度和峰值时间则表现相反趋势.
Taking sixteen japonica rice varieties from Yunnan of China and Korea growing at three locations with different altitudes in Yunnan Plateau as test materials, this paper studied the effects of different ecological conditions on their grain quality, including brown rice length (BRL), brown rice width (BRW), lengthwidth ratio (L/W), chalky rate (CR), whiteness (WH), amylose content (AC), protein content (PC), and alkali digestion value (ADV), and their starch RVA profile, including peak viscosity (PKV), hot viscosity (HTV), final viscosity (FLV), breakdown viscosity (BDV), setback viscosity (SBV), consistence viscosity(CTV), peak time (PeT), and pasting temperature (PaT). Of all the test parameters, SBV had the largest coefficient of variation. The coefficients of variation of BRL, CR, AC, PC, ADV, FLV, SBV, and PeT of Yunnan varieties were higher than those of Korean varieties, while the BRW, L/W, WH, PKV, HTV, BDV, CTV, and PaT of Korean varieties had higher coefficients of variation than those of Yunnan varieties. With increasing altitude, the BRL, BRW, L/W, WH, AC, ADV, FLV, and CTV of Yunnan varieties, and the BRL, BRW, WH, PC, PKV, HTV and BDV of Korean varieties decreased significantly, while the CR, PC, HTV, and PeT of Yunnan varieties, and the L/W, AC, ADV, SBV and CTV of Korean varieties increased significantly. The CR of Korean varieties had no obvious change. The PKV, BDV, and PaT of Yunnan varieties and the PaT of Korean varieties increased after an initial decrease, whereas the SBV of Yunnan varieties and the FLV and PeT of Korean varieties were in reverse.