耐低氮糜子品种的筛选及农艺性状的综合评价

陈凌,王君杰,王海岗,曹晓宁,刘思辰,田翔,秦慧彬,乔治军

Screening of Broomcorn Millet Varieties Tolerant to Low Nitrogen Stress and the Comprehensive Evaluation of Their Agronomic Traits

CHEN Ling,WANG JunJie,WANG HaiGang,CAO XiaoNing,LIU SiChen,TIAN Xiang,QIN HuiBin,QIAO ZhiJun

表2 低氮胁迫对不同糜子品种农艺性状的影响

Table 2 Effect of low-N stress on agronomic traits in different broomcorn millet varieties

参数 Parameter 处理 Treatment 株高 Plant height (cm) 茎粗 Stem diameter (cm) 主茎节数 Number of main-stem nodes 穗长 Panicle length (cm) 草重 Straw weight (g) 单株穗重 Panicle weight per plant (g) 单株粒重 Grain weight per plant (g) 千粒重 1000-grain weight (g) 叶面积 Leaf area (cm2) 年度均值 Annual mean 2017 N+Normal-N 167.11±28.62 5.85±0.95 5.40±0.74 36.11±7.72 15.99±6.80 9.75±4.62 6.78±3.26 7.29±1.24 680.52±316.56 N-Low-N 163.88±31.38 5.09±0.84 4.90±0.74 32.44±7.45 11.69±5.21 8.58±3.42 5.83±3.05 7.15±1.21 426.76±206.57 2018 N+Normal-N 171.80±33.77 6.09±0.99 5.85±0.80 46.43±10.64 15.90±10.66 12.58±6.81 8.99±4.61 7.90±1.34 861.16±469.04 N-Low-N 171.78±16.21 5.51±0.91 5.10±0.77 45.91±12.18 13.94±8.56 10.53±6.38 7.32±4.92 7.43±1.68 713.97±341.02 2年均值 Mean of 2-year N+Normal-N 169.46±25.13 5.97±0.97 5.62±0.77 41.27±7.68 15.95±6.73 11.16±4.14 7.89±3.30 7.59±1.29 770.84±276.36 N-Low-N 167.83±28.18 5.30±0.88 5.00±0.76 39.18±7.56 12.82±5.87 9.56±4.24 6.58±3.39 7.29±1.35 570.37±195.66 范围 Range N+Normal-N 85.67—220.16 3.43—8.20 3.78-8.60 20.67—58.00 3.90—41.12 3.50—20.45 0.32—14.85 4.01—9.64 223.25—2124.47 N-Low-N 84.67—220.00 3.36—8.15 2.85—6.89 19.33—54.50 2.15—30.78 2.22—22.70 0.32—16.38 4.18—9.90 202.64—1127.14 变异系数 CV (%) N+Normal-N 14.83 16.25 13.71 18.61 42.22 37.11 41.82 33.89 35.85 N-Low-N 16.79 16.57 15.14 19.30 45.77 44.45 51.50 18.54 34.30