小黑麦新品系在甘肃省陇中冬小麦区的种子产量及产量构成因素的研究

以小黑麦新品系P1为试验材料,研究了该品系在甘肃省陇中冬小麦区的种子产量及产量稳定性,并分析了种子产量构成因素(穗粒数,穗粒质量,小穗数,穗长)与种子产量的相关性。研究结果表明:小黑麦新品系P1抗倒伏,生育期比2个对照缩短7~14d;除株高和小穗数外,小黑麦新品系P1的种子产量(4 464.49kg/hm2)、穗粒数(42.93个)、穗长(9.39cm)和穗粒质量(1.66g)均显著高于其他2个对照品种;3个试点中,临夏点小黑麦种质的平均种子产量最高(4 513.47kg/hm2),兰州点小黑麦的穗长最长(9.49cm)。综合分析显示,小黑麦新品系P1在3个试验点种子产量较稳定,在临夏点种子产量最高(5 280.70kg/hm2),为最适宜种植区。

Studies on the seed yield and yield components of new triticale line in the winter wheat grown area of Longzhong region,Gansu province

The seed yield and its correlations with yield affecting factors of a new triticale line P1 was studied in in the winter wheat grown area of Longzhong region,Gansu province.The results indicated that the new trit-icale line P1 was resistant to the lodging and the growth period was 7 to 14 days shorter than the two controls. The parameters including,seed yield,spike length,the number of grain and grain weight per spike were signifi-cantly higher than the two controls except for the plant height and number of the spikelet per spike.Among 3 experimental sites,the highest average seed yield (45 13.47 kg/hm2 )and spike length (9.49 cm)were obtained at Linxia and Lanzhou,respectively.Comprehensive analysis showed that the new triticale line P1 had high seed yield,the yield was stable in 3 different areas,and Linxia was the best area to produce the triticale seed.