Zhu Zhen-hua, Kim Ki-young, Yuan Ping-rong, Zhao Guo-zhen, Su Zhen-xi, Liao Xin-hua, Yang Sea-jun, Dai Lu-yuan
Japonica Rice Breeding Center, Yunnan Academy of Agricultural Sciences, Kunming 650205, China.
Ying Yong Sheng Tai Xue Bao. 2009 Dec;20(12):2949-56.
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), length-width 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.
以中国云南和韩国的16个粳稻品种为试验材料，这些品种种植于云南高原3个不同海拔的地点，研究了不同生态条件对其稻米品质的影响，包括糙米长度（BRL）、糙米宽度（BRW）、长宽比（L/W）、垩白率（CR）、白度（WH）、直链淀粉含量（AC）、蛋白质含量（PC）和碱消值（ADV），以及它们的淀粉RVA谱特征，包括峰值黏度（PKV）、热黏度（HTV）、最终黏度（FLV）、崩解值（BDV）、回冷值（SBV）、一致性黏度（CTV）、峰值时间（PeT）和糊化温度（PaT）。在所有测试参数中，SBV的变异系数最大。云南品种的BRL、CR、AC、PC、ADV、FLV、SBV和PeT的变异系数高于韩国品种，而韩国品种的BRW、L/W、WH、PKV、HTV、BDV、CTV和PaT的变异系数高于云南品种。随着海拔升高，云南品种的BRL、BRW、L/W、WH、AC、ADV、FLV和CTV以及韩国品种的BRL、BRW、WH、PC、PKV、HTV和BDV显著降低，而云南品种的CR、PC、HTV和PeT以及韩国品种的L/W、AC、ADV、SBV和CTV显著增加。韩国品种的CR没有明显变化。云南品种的PKV、BDV和PaT以及韩国品种的PaT先下降后上升，而云南品种的SBV以及韩国品种的FLV和PeT则相反。
