论文部分内容阅读
以干旱敏感型品种花育23号和抗旱型品种花育25号为材料,在防雨棚栽培池内进行土柱栽培试验,设置充足灌水和中度干旱胁迫2个水分处理,系统研究干旱胁迫对两花生品种根系生理生化特征及产量和品质的影响。研究表明,干旱胁迫处理下,两品种0-20cm土层根系中可溶性糖和脯氨酸积累量最大增幅出现的时间不同,花育25号对干旱胁迫的响应相对较早;干旱胁迫下,两品种0-20cm和20-40cm土层内根系活力在播种后30~50d增幅最大,花育25号和花育23号分别为203.62%、393.97%和74.62%、227.22%。干旱胁迫显著增加两品种籽仁蛋白质含量;花育23号脂肪含量和油酸/亚油酸(O/L)值因干旱胁迫而显著降低但对花育25号无显著影响。干旱胁迫显著降低两花生品种的荚果和籽仁产量,花育23号荚果和籽仁的减产率均在55%以上,而花育25号仅在38%以下。
Soil-column cultivation experiments were conducted in the rain-sheltered cultivation ponds with Huadong 23, a drought-sensitive cultivar, and Huayu 25, a drought-tolerant cultivar, and two water treatments, adequate irrigation and moderate drought stress, were set up to study the effect of drought stress Root Physiological and Biochemical Characteristics and Yield and Quality of Two Peanut Varieties. The results showed that under drought stress, the maximum increase of soluble sugar and proline accumulation in 0-20 cm soil layer of two cultivars occurred at different times, and the response of Huayu 25 to drought stress was relatively early. Under drought stress, The root activities of 0-20cm and 20-40cm soil layers increased most significantly 30- 50d after sowing. The flower buds of Huayu 25 and Huayu 23 were 203.62%, 393.97% and 74.62% and 227.22% respectively. Drought stress significantly increased the protein content of two varieties of seed; Huayu 23 fat content and oleic acid / linoleic acid (O / L) value was significantly reduced due to drought stress but had no significant effect on Huayu 25. Drought stress significantly reduced the pod and kernel yield of two peanut varieties. The yield reduction of Huayu No. 23 pod and kernel was more than 55%, while Huayu 25 was only 38% or less.