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盆栽条件下,通过低钾和施钾两个处理,研究低钾胁迫对不同基因型大豆生长发育的影响。结果表明:在低钾胁迫下,不同基因型大豆的株高、茎粗、分枝数和植株干重均减少,T40的株高和植株干重减少的最小,仅减少1.1%和3.4%;低钾还造成不同基因型大豆主茎节数增加,增加最多的是九农22。在低钾胁迫下,耐低钾品种T40单株荚数增加9%,每荚粒数降低10%,单株粒数降低2%,百粒重降低10%;不耐低钾的大豆品种GD8521单株荚数降低18%,每荚粒数降低10%,单株粒数降低26%,百粒重降低16%。由于产量性状的互作,耐低钾的大豆品种产量保持稳定。
Under potted condition, the effects of low potassium stress on the growth and development of different soybean genotypes were studied by low potassium and potassium treatments. The results showed that the plant height, stem diameter, branch number and plant dry weight of different genotype soybean decreased under low potassium stress. The minimum of plant height and plant dry weight of T40 decreased by only 1.1% and 3.4% respectively. Potassium also caused different genotypes of soybean main stem nodes increased, the largest increase is 9 farming 22. Under low potassium stress, the number of pods per plant resistant to low potassium increased by 9%, the number of per pod decreased by 10%, the number of per plant decreased by 2% and the percentage of per plant decreased by 10%. The low tolerant soybean variety GD8521 The number of pods per plant was reduced by 18%, the number of pods per grain was reduced by 10%, the number of grains per plant was reduced by 26% and the weight of grains per 100% by 16%. Due to the interaction of yield traits, the yield of low-potassium tolerant soybean varieties remained stable.