苦荞耐低磷力鉴定及其产量和品质分析

摘要

Using 20 tartary buckwheat varieties as material, the resistance to low phosphorus the main traits of agro-nomic, yield and quality were investigated. The results indicated that the grain number per plant, the yield per plant and yield of tartary buckwheat under the treatment of low phosphorus showed a downward trend, but the flavonoids content showed an upward trend, compared with the control. The content of four protein components varied among the varieties, and the responses to low phosphorus were inconsistent. The resistance to low-phosphorus stress in biological yield of three testing varieties reached level 1. The resistance to low-phosphorus stress in grain yield of five testing varieties reached level 2. The comprehensive value of five testing varieties reached level 2 and the adaptability of one testing variety reached level 1. The results of comprehensive anal-ysis showed that Liukuqiao 3 was a high yield variety and had good low-phosphorus tolerance and adaptability(level 1), and Jinqiaomai 2 was a high yield variety and was sensitive to phosphorus.%选用20个苦荞审定品种为试验材料,进行苦荞品种的耐低磷力鉴定及其农艺性状、产量与品质性状对低磷处理的响应研究.结果表明,与对照相比,低磷下苦荞单株粒数、单株籽粒质量和产量呈下降趋势,种子总黄酮含量呈上升趋势;4种蛋白质组分含量在品种间差异大,且对低磷的响应不一致.耐低磷力鉴定发现,3个品种生物产量耐低磷力达到1级,5个品种籽粒产量耐低磷力和5个品种的耐低磷力综合值达到2级;1个品种适应性达到1级.综合分析发现,六苦3号为高产耐低磷品种、适应性达到1级,晋荞麦2号为高产磷敏感品种.