旱地豌豆新品种定豌8号选育及其特征分析
Breeding and characteristics of a new dryland pea variety Dingwan 8

定豌8号旱地豌豆新品种，系以A909为母本，7345为父本，采用有性杂交和系谱选育法培育而成。在2007—2009年多点试验中，15点（次）折合平均产量1 908.75 kg·hm-2，较对照品种定豌4号增产18.64%，产量表现稳定高产。定豌8号平均株高65.24 cm，主茎节数12.0节，单株有效荚数4.38个，单荚粒数4.02粒，百粒重21.30 g，经济性状优良。生育期90 d左右。干籽粒粗蛋白含量26.93%，赖氨酸含量1.38%，粗脂肪含量0.902%，粗淀粉含量57.52%。抗旱、耐根腐病、丰产稳产性好，适宜在甘肃中部干旱、半干旱地区以及同类地区推广种植。
A new pea varietiy Dingwan 8 was bred through sexual hybridization and pedigree breeding method using A909 as the female parent and 7345 as male parent. Among multi-site tests in 2007—2009, the average yield from 15 points was 1 908.75 kg·hm-2, increased by 18.64% compared to Dingwan 4 (CK). Its plant height was about 65.24 cm. Node numbers of main stem, effective pods per plant, and grains per pod were 12.0, 4.38, and 4.02, respectively. Its 100-seed weight was 21.30 g. The growth period was 90 days. Crude protein, lysine, crude fat, and starch conten in dry seeds were 26.93%, 1.38%, 0.902%, and 57.52%, respectively. In conclusion, this variety would be high in yield, good in drought and root rot resistance, and suitable to be planted in arid and semi-arid region in Gansu and other similar regions.