通过对10份燕麦(Avena sativa L.)材料种子产量及其产量构成因子进行研究,明确影响燕麦种子产量的主要因子,并找出提高种子产量的途径.结果表明:10份燕麦材料种子产量构成因子间差异显著(P＜0.05).单株生殖枝数、穗长、小穗数、种子粒数/花序和千粒重与种子产量均成极显著正相关(P＜0.01)；小穗数对种子产量的间接作用最大,且主要是通过种子粒数/花序、穗长和单株生殖枝数产生.单株生殖枝数、小穗数和千粒重是影响种子产量的主要因素,其回归模型为:Y=-8.359+0.172X1 +0.112X4 +1.393X6.在注重种子粒数/花序和穗长的同时,应把单株生殖枝数和小穗数作为重要的选择指标.%In order to identify main factors affecting seed yield and key technique improving seed yield of Avena sativa L. , seed yield and yield components were studied with ten Avena sativa L. Materials. Results show that seed yield components had significant difference among the 10 oat materials (P<0. 05). Procreant amount, panicle length, spikelet number, seed number/inflorescence and the weight of 1000-seed were also significantly different (P<0. 01). The largest indirect effect on seed yield was spikelet number produced through seed number/inflorescence, panicle length and procreant amount. The most important factors in seed yield were procreant amount, spikelet number and the weight of 1000-seed. The regressive model was as Y= - 8.359+0.172X1 +0.112X4 +1.393X6. This study recommends considering not only the selection of seed number/inflorescence and panicle length, but also the procreant amount and spikelet number.
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