摘要
为研究不同基因型大豆耐低磷能力,筛选磷高效大豆品种,选用4个不同生态类型的大豆品种,在营养液水培条件下进行耐低磷研究。测定各大豆苗期生物量、根系形态、磷含量和磷利用效率等21个形态和生理指标,结果表明:低磷胁迫下,大豆苗期叶面积、地上部和地下部生物量、根系表面积、叶绿素含量、地上部和地下部磷含量和磷积累量下降,而磷利用效率升高。所有指标在各品种间存在显著差异,可用于评价大豆耐低磷能力。灰色关联分析表明:川豆14耐低磷性最强,晋豆23号次之,滇86-4和矮选较弱。
In order to study the low phosphorus tolerance of different genotypes of soybean, four soybean varieties with different ecological types were selected to study their low phosphorus tolerance under hydroponic conditions. Twenty-one morphological and physiological indexes such as bio-mass, root morphology, phosphorus content and phosphorus use efficiency of soybean seedlings were measured. The results showed that under low phosphorus stress, leaf area, dry and fresh weight of above and underground parts of the seedlings, root surface area, chlorophyll content, phosphorus content and phosphorus accumulation decreased, while phosphorus use efficiency increased. All indexes were significantly different among varieties, which could be used to evaluate the low phosphorus tolerance of soybean. Grey relation analysis suggests that the tolerance of the four rootstocks to low phosphorus is in order of Chuandou 14 >Jindou 23 >Dian 86-4 >Aixuan.
出处
《植物学研究》
2021年第4期411-418,共8页
Botanical Research
