Genetic Diversity and Comprehensive Evaluation of Phenotypic Traits in Sea-Island Cotton Germplasm Resources
YANG Tao,, HUANG YaJie, LI ShengMei, REN Dan, CUI JinXin, PANG Bo, YU Shuang, GAO WenWei,College of Agriculture, Xinjiang Agricultural University/Engineering Research Centre of Cotton, Ministry of Education, Urumqi 830052
Abstract 【Objective】The study is an attempt to the genetic diversity relationship of phenotypic traits of Sea-island cotton germplasm and screen Sea-island cotton germplasm with excellent traits, which provides a theoretical basis for in depth research on quality traits of Sea-island cotton.【Method】Genetic diversity analysis and comprehensive evaluation were carried out with 12 phenotypic traits of 175 Sea-island cotton. Principal component analysis, weights and the use of membership function to generate comprehensive evaluation value D for comprehensive evaluation of Sea-island cotton germplasm resources.【Result】The results (showed that) Sea-island cotton have rich types and consistent with the range of phenotypic traits was 6.40%-28.10%,which the resource genetic diversity index is 1.97 to 2.05, the diversity analysis significant differences in genetic diversity of Sea-island cotton resources between Xinjiang and outside Xinjiang (P<0.05); 3 comprehensive factors were converted from principal component analysis 12 traits, which the contribution rates are: 49.34%, 18.03% and 10.63%, with a total contribution rate of 78%; The larger load of the first principal component is the number of envoys, the height of envoys, the number of effective branches, the number of bolls, the number of effective bolls, the weight of seed cotton per plant and the weight of lint per plant, representing growth and effective yield factors; The larger load of the second component is lint, single boll seed cotton weight and single boll lint weight, which represents the single boll yield factor; The third component load is the plant height and the number of boll shedding, representing plant height and boll shedding factor; The statistical analysis of Sea-island cotton resources evident that the difference was not significant in extreme germplasm at domestic , and there are more materials with medium-performing Sea-island cotton resources in China. In China, the proportion of extreme germplasm outside Xinjiang is relatively high, and the difference was not significant between Xinjiang and foreign intermediate germplasm; Cluster analysis 175 Sea-island cotton resources then divided into 4 groups. Group I has discrepancy germplasm with short stalk of gravity, low yield; Group II has high lint percent and extensive yield of lint yield per plant, and has higher potential yielding germplasm; Group III has perferable comprehensive traits and excellent germplasm; group IV is short-stalked, high-lint, and extremely particular germplasm; comprehensive evaluation screens out 2 excellent comprehensive traits varieties XH30 and 270; By stepwise regression screening Sea-island cotton germplasm screening phenotype of five key indicators (plant height first node height, number of fruit branches, lint weight per boll and cotton weight per seed). 【Conclusion】The genetic diversity of the tested Sea-island cotton germplasm resources is relatively high, but the genetic diversity is low. The plant height, fruit branch number and lint yield per plant are normally distributed among the genotypes, those left traits are skewed. The tested germplasm divided into 4 categories; Plant height, height of the first node, fruit branch number, yield of single boll Lint yield, seed cotton yield per plant, the research provides a theoretical reference to selection of excellent germplasm for sea-island cotton germplasm resources that 5 indicators can be used as comprehensive indicators for the evaluation of core germplasm. Keywords:Gossypium barbadense;germplasm resources;phenotypic traits;genetic diversity;comprehensive evaluation
PDF (883KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 杨涛, 黄雅婕, 李生梅, 任丹, 崔进鑫, 庞博, 于爽, 高文伟. 海岛棉种质资源表型性状的遗传多样性分析及综合评价[J]. 中国农业科学, 2021, 54(12): 2499-2509 doi:10.3864/j.issn.0578-1752.2021.12.002 YANG Tao, HUANG YaJie, LI ShengMei, REN Dan, CUI JinXin, PANG Bo, YU Shuang, GAO WenWei. Genetic Diversity and Comprehensive Evaluation of Phenotypic Traits in Sea-Island Cotton Germplasm Resources[J]. Scientia Acricultura Sinica, 2021, 54(12): 2499-2509 doi:10.3864/j.issn.0578-1752.2021.12.002
175份海岛棉资源材料包含国外材料72份(涵盖亚洲、美洲等,分别来自美国16份、前苏联44份、埃及12份)和国内材料103份(新疆47份、疆外56份)。基于株高(plant height,PH)、衣分(lint percent,LP)、铃数(boll number,BN)、始节数(first node of fruit branch,FNB)、果枝数(fruit branch number,FBN)、有效果枝数(effective fruit branch number,EFBN)、有效铃数(effective boll number,EBN)、蕾铃脱落数(number of boll drop,NOBD)、单铃籽棉重(yield of single boll seed cotton,YOSBSC)、单铃皮棉重(yield of single boll lint yield,YOSBLY)、单株籽棉重(seed cotton yield per plant,SCYPP)、单株皮棉重(lint yield per plant,LYPP)12个表型性状,利用主成分分析和隶属函数产生综合评价值D进行海岛棉种质资源综合评价。
Table 1 表1 表1主要农艺性状描述性指标 Table 1Descriptive indicators of main agronomic traits
性状Trait
变幅Range
均值±标准差Mean±SD
偏度Skewness
峰度Kurtosis
变异系数CV (%)
PH
50.18—110.57
75.33±12.97
0.501
-0.317
17.22
FNB
7.38—14.59
9.92±1.04
0.629
1.776
10.47
FBN
8.27—19.39
12.13±2.06
0.854
0.727
16.95
EFBN
2.96—13.77
6.85±1.80
0.846
1.511
26.31
BN
5.54—21.50
10.89±2.62
0.693
1.077
24.02
EBN
3.16—14.17
7.46±1.77
0.606
1.45
23.77
NOBD
5.97—16.56
9.42±1.56
1.073
3.235
16.52
YOSBSC
2.11—3.99
3.00±0.26
0.118
1.274
8.63
YOSBLY
0.64—1.32
0.97±0.11
0.168
0.844
11.27
LP
0.27—0.38
0.32±0.02
0.032
0.254
6.40
SCYPP
9.22—45.10
22.59±5.97
0.654
1.252
26.42
LYPP
2.91—14.78
7.27±2.04
0.617
0.903
28.10
PH:株高;FNB:始节数;FBN:果枝数;EFBN:有效果枝数;BN:铃数;EBN:有效铃数;NOBD:蕾铃脱落数;YOSBSC:单铃籽棉重;YOSBLY:单铃皮棉重;LP:衣分;SCYPP:单株籽棉重;LYPP:单株皮棉重。下同 PH: Plant height; FNB: First node of fruit branch; FBN: Fruit branch number; EFBN: Effective fruit branch number; BN: Boll number; EBN: Effective boll number; NOBD: Number of boll drop; YOSBSC: Yield of Single boll seed cotton; YOSBLY: Yield of single boll lint yield; LP: Lint percent; SCYPP: Seed cotton yield per plant; LYPP: Lint yield per plant. The same as below
A:海岛棉12个数量性状的遗传多样性指数;B:国内外海岛棉数量性状的遗传多样性指数。PH:株高;FNB:始节数;FBN:果枝数;EFBN:有效果枝数;BN:铃数;EBN:有效铃数;NOBD:蕾铃脱落数;YOSBSC:单铃籽棉重;YOSBLY:单铃皮棉重;LP:衣分;SCYPP:单株籽棉重;LYPP:单株皮棉重。下同 Fig. 1Genetic diversity of Sea-island cotton
A: Genetic diversity index of 12 quantitative traits in Sea-island cotton; B: Genetic diversity index of quantitative traits in Sea-island cotton in China and abroad. PH: Plant height; FNB: First node of fruit branch; FBN: Fruit branch number; EFBN: Effective fruit branch number; BN: Boll number; EBN: Effective boll number; NOBD: Number of boll drop; YOSBSC: Yield of Single boll seed cotton; YOSBLY: Yield of single boll lint yield; LP: Lint percent; SCYPP: Seed cotton yield per plant; LYPP: Lint yield per plant. The same as below
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