Crops ›› 2017, Vol. 33 ›› Issue (6): 65-71.doi: 10.16035/j.issn.1001-7283.2017.06.012

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Lodging Resistance Identification and Evaluation of Different Tartary Buckwheat Cultivars

Song Yue1,Xiang Dabing1,2,Huang Houbing1,Fan Yu1,Wei Shuang1,Zhang Sai1   

  1. 1School of Pharmacy and Bioengineering,Chengdu University,Chengdu 610106,Sichuan,China
    2Key Laboratory of Coarse Cereal Processing,Ministry of Agriculture,Chengdu 610106,Sichuan,China
  • Received:2017-08-22 Revised:2017-11-07 Online:2017-12-15 Published:2018-08-26
  • Contact: Dabing Xiang

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Abstract:

Twenty tartary buckwheat cultivars were used to study the difference in lodging resistance and evaluation method. The result showed that these varieties were divided into five types by systematic cluster analysis method based on the difference of their lodging rate, three varieties was strong lodging resistance type, six varieties were high lodging resistance type, six varieties were medium lodging resistance type, three varieties were sensitive type and two varieties were highly sensitive type. Correlation analysis showed that the second internode length was significantly positively correlated with lodging rate, and the correlation coefficient was 0.455. The culm lodging resistance index, puncture strength and dry matter weight of cotyledonary internode, mechanical strength of the first and the second internodes, lignin and cellulose content of stem were significantly negatively correlated with lodging rate, and the correlation coefficient were -0.936, -0.453, -0.453, -0.509, -0.510, -0.529 and -0.709, respectively. So, the second internode, culm lodging resistance index, puncture strength and dry matter weight of cotyledonary internode, mechanical strength of the first and the second internodes, lignin and cellulose content of stem could be employed as the main parameters to evaluate the lodging resistance of tartary buckwheat.

Key words: Tartary buckwheat, Culm lodging-resistance index, Lodging resistance, Evaluation method

Table 1

The varieties and the sources"

品种Variety 来源Source
川荞1号
Chuanqiao1		 四川凉山州西昌农业科学研究所高山作物
研究站
川荞2号
Chuanqiao2		 四川凉山州西昌农业科学研究所高山作物
研究站
云荞1号Yunqiao1 云南省农业科学院生物技术与种质资源研究所
云荞2号Yunqiao2 云南省农业科学院生物技术与种质资源研究所
西荞1号Xiqiao1 四川成都大学农业部杂粮加工重点实验室
西荞3号Xiqiao3 四川西昌农业高等专科学校
晋荞麦(苦)2号Jinqiao2 山西省农业科学院小杂粮研究中心
晋荞麦(苦)6号Jinqiao6 山西省农业科学院高寒区作物研究所
滇宁1号Dianning1 云南省农业科学院农作物品种资源站
黑丰1号Heifeng1 山西省农业科学院农作物品种资源研究所
米荞1号Miqiao1 四川省成都大学农业部杂粮加工重点实验室
六苦3号Liuku3 贵州省六盘水市农业科学研究所
黔苦5号Qianku5 贵州省威宁县农业科学研究所
额吉苦荞
Eji Buckwheat		 四川省凉山州美姑县本地品种
九江苦荞
Jiujiang Buckwheat		 江西省吉安市农业科学研究所
凤凰苦荞
Fenghuang Buckwheat		 湖南省经济作物发展中心
云南花苦
Yunnanhuaku		 云南省农业科学院生物技术与种质资源研究所
通辽苦荞
Tongliao Buckwheat		 贵州植物遗传育种研究所
海子鸽苦荞
Haizige Buckwheat		 贵州植物遗传育种研究所
大安本苦荞
Daanben Buckwheat		 贵州植物遗传育种研究所

Table 2

The lodging rate and culm lodging-resistance index of all the buckwheat varieties"

品种
Variety		 倒伏率(%)
Lodging rate		 茎秆抗倒指数(N/cm)
Culm lodging resistance index
云荞2号 12.60k 2.568a
凤凰苦荞 13.00k 2.566a
川荞1号 14.00k 2.540ab
西荞1号 15.16jk 2.322abc
米荞1号 15.18jk 2.305abc
云荞1号 15.42ijk 2.302abc
西荞3号 16.12hijk 2.309abc
滇宁1号 17.34hijk 2.283abc
晋荞麦(苦)6号 17.80ghijk 2.282abc
六苦3号 20.18fghij 2.029bcde
云南花苦 20.34fghij 2.038bcd
川荞2号 20.82fghij 2.061abcd
黔苦5号 21.48efgh 2.020bcde
九江苦荞 23.04efg 2.030bcde
通辽苦荞 24.58def 2.028bcde
晋荞麦(苦)2号 26.76cde 1.808cde
黑丰1号 28.66cd 1.802cde
海子鸽苦荞 30.54bc 1.802cde
额吉苦荞 35.92b 1.590de
大安本苦荞 47.12a 1.504e

Fig.1

Clustering analysis"

Table 3

The correlation coefficient matrix between agronomic traits and lodging resistance"

指标Index LR CLRI H GH LI0 LI1 LI2 LI3 DI0 DI1 DI2 DI3 SDW LDW DWI0 DWI1 DWI2 DWI3
LR 1 -0.936** -0.297 -0.192 -0.012 -0.362 -0.455* 0.350 -0.133 0.013 0.230 -0.260 -0.299 -0.169 -0.453* -0.311 -0.311 -0.295
CLRI -1 -0.343 -0.243 -0.057 -0.362 -0.447* -0.337 0.325 0.273 0.038 -0.044 0.437 0.277 0.579** 0.386 0.435 0.369
H -1 -0.890** -0.472* -0.739** -0.636** 0.582** 0.450* 0.387 0.463* -0.578* 0.554* 0.328 0.735** 0.759** 0.813** 0.725**
GH -1 -0.509* -0.834** -0.767** 0.664** 0.514* 0.406 0.511* -0.665** 0.540* 0.371 0.680** 0.893** 0.892** 0.829**
LI0 -1 -0.647** -0.546* 0.728** 0.177 0.142 0.175 -0.377 0.168 -0.004 0.475* 0.323 0.393 0.463*
LI1 -1 -0.883** 0.828** 0.356 0.306 0.329 -0.460* 0.349 0.196 0.547* 0.821** 0.826** 0.796**
LI2 -1 0.895** 0.207 0.284 0.306 -0.474* 0.186 0.086 0.345 0.802** 0.823** 0.804**
LI3 1 0.132 0.202 0.200 -0.411 0.039 -0.118 0.289 0.611** 0.644** 0.635**
DI0 1 0.856** 0.821** -0.820** 0.752** 0.723** 0.750** 0.492* 0.431 0.395
DI1 1 0.864** -0.849** 0.493* 0.441 0.536* 0.430 0.359 0.352
DI2 1 -0.884** 0.590** 0.571** 0.626** 0.535* 0.480* 0.451*
DI3 -1 0.611** 0.534* 0.699** 0.642** 0.597** 0.603**
SDW 1 0.942** 0.912** 0.588** 0.629** 0.618**
LDW 1 0.780** 0.472* 0.504* 0.503*
DWI0 1 0.640** 0.696** 0.682**
DWI1 1 0.966** 0.929**
DWI2 1 0.962**
DWI3 1

Table 4

The correlation coefficient between physical character and lodging resistance"

指标Index M0 M1 M2 M3 P0 P1 P2 P3
LR -0.401 -0.509* -0.510* -0.348 -0.453* -0.164 -0.162 -0.060
CLRI 0.388 0.490* 0.457* 0.274 0.375 0.142 0.097 -0.027
H 0.403 0.418 0.396 0.443 0.245 0.113 0.299 0.099
GH 0.450* 0.498* 0.446* 0.436 0.084 -0.074 0.138 -0.089
LI0 0.191 0.300 0.236 0128 -0.033 -0.249 -0.234 -0.426
LI1 0.290 0.318 0.318 0.226 -0.103 -0.277 -0.065 -0.296
LI2 0.049 0.080 0.036 0.028 -0.321 -0.393 -0.222 -0.456*
LI3 -0.012 0.079 -0.031 -0.085 -0.348 -0.466* -0.391 -0.542*
DI0 0.854** 0.821** 0.801** 0.820** 0.564* 0.306 0.561* 0.078
DI1 -0.601** 0.613** 0.519* 0.551* 0.302 0.081 0.317 -0.068
DI2 0.602** 0.563** 0.505** 0.579** 0.343 0.190 0.383 0.076
DI3 0.658** 0.685** 0.591** 0.607** 0.214 0.059 0.251 -0.133
SDW 0.732** 0.612** 0.700** 0.821** 0.699** 0.609** 0.792** 0.412
LDW 0.731** 0.566** 0.699** 0.812** 0.667** 0.610** 0.788** 0.380
DWI0 0.761** 0.702** 0.749** 0.832** 0.644** 0.472* 0.644** 0.275
DWI1 0.360 0.340 0.311 0.405 0.056 0.016 0.228 0.022
DWI2 0.338 0.295 0.311 0.405 0.096 0.062 0.248 0.031
DWI3 0.328 0.300 0.307 0.369 0.075 0.015 0.195 -0.018

Table 5

The correlation coefficient between physiological index and lodging resistance"

指标
Index		 可溶性糖含量
Soluble sugar content		 木质素含量
Lignin content		 纤维素含量
Cellulose content
LR -0.195 -0.709** -0.529*
CLRI -0.125 0.637** 0.524*
H -0.231 0.291 0.318
GH -0.297 0.168 0.446*
LI0 -0.620** 0.201 0.609**
LI1 -0.337 0.073 0.500*
LI2 -0.102 -0.227 0.371
LI3 -0.277 -0.115 0.550*
DI0 -0.567** 0.400 0.347
DI1 -0.441 0.403 0.291
DI2 -0.370 0.319 0.169
DI3 -0.409 0.260 0.347
SDW -0.250 0.232 -0.069
LDW -0.153 0.061 -0.184
DWI0 -0.467* 0.389 0.211
DWI1 -0.100 0.041 0.184
DWI2 -0.062 -0.027 0.134
DWI3 -0.082 -0.010 0.106
M0 -0.503* 0.382 0.330
M1 -0.617** 0.501* 0.526*
M2 -0.584** 0.411 0.407
M3 -0.446* 0.399 0.182
P0 -0.347 0.469* -0.117
P1 -0.044 0.246 -0.422
P2 -0.100 0.302 -0.324
P3 -0.228 0.291 -0.577**
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