Crops ›› 2018, Vol. 34 ›› Issue (2): 25-29.doi: 10.16035/j.issn.1001-7283.2018.02.005

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Factor Analysis on GCA Effect Value of Main Traits of Maize

Li Zhongnan1,Wang Yueren2,Wu Shenghui2,Qu Haitao2,Xu Zhengxue2,Li Guangfa2   

  1. 1 Agricultural and Technology Extension Station of Jilin Province, Changchun 130033, Jilin, China
    2 Tonghua Academy of Agricultural Sciences of Jilin Province, Meihekou 135007, Jilin, China
  • Received:2017-12-10 Revised:2018-02-09 Online:2018-04-20 Published:2018-08-27

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Abstract:

Eighty-four DH as the female parents, and corresponding heterotic groups A6, 694, WG5603, PHB1M, PH4CN as the male parents, NC II genetic mating design (84×5) were used to conduct the correlation and factor analysis on main traits’ relative value of GCA. The results showed that the number of kernel per row was the most important choice of yield, Low ASI and high bulk density were important reference indexes of yield.

Key words: Maize, GCA, Effect value, Factor

Table 1

Correlation coefficient of general combining ability for traits"

性状
Trait		 株高
Plant
height		 穗位高
Ear
height		 抽雄日数
Days of
tillering		 吐丝日数
Days of
silking		 ASI
Anthesis-silking interval		 单株产量
Yield per
plant		 穗长
Ear
length		 穗行数
Row number
per ear		 行粒数
Grain number
per row		 百粒重
100-grain
weight		 出子率
Grain
rate		 容重
Grams
per liter		 秃尖长
Bald tip
length		 脱粒水分
Threshing
water		 SPAD
苗期
Seedling		 拔节期
Jointing		 抽雄期
Tasseling
株高 1.00
穗位高 0.72** 1.00
抽雄日数 0.41** 0.66** 1.00
吐丝日数 0.42** 0.79** 0.79** 1.00
ASI 0.11 0.36** -0.11 0.52** 1.00
单株产量 0.37** 0.19 0.00 0.09 0.13 1.00
穗长 0.44** 0.19 0.17 0.01 -0.23* 0.44** 1.00
穗行数 -0.13 -0.13 -0.29** -0.18 0.12 -0.05 -0.45** 1.00
行粒数 0.59** 0.77** 0.48** 0.72** 0.50** 0.48** 0.35** -0.28** 1.00
百粒重 -0.39** -0.71** -0.39** -0.70** -0.61** 0.02 0.13 -0.17 -0.70** 1.00
出子率 -0.25* -0.40** -0.65** -0.48** 0.13 -0.11 -0.14 0.08 -0.24* 0.19 1.00
容重 -0.15 0.05 -0.11 0.29** 0.61** 0.40** 0.02 -0.06 0.40** -0.24* 0.07 1.00
秃尖长 0.03 -0.12 -0.21* -0.36** -0.29** -0.18 0.14 0.29** -0.27* 0.08 0.03 -0.43** 1.00
脱粒水分 -0.10 -0.17 -0.33** -0.28** 0.01 0.42** 0.31** 0.04 0.07 0.13 0.15 0.17 0.07 1.00
苗期SPAD 0.26* 0.43** 0.55** 0.45** -0.04 0.11 0.16 -0.12 0.50** -0.49** -0.36** 0.01 -0.05 0.02 1.00
拔节期SPAD 0.38** 0.49** 0.45** 0.41** 0.03 0.14 0.18 -0.40** 0.55** -0.41** -0.23* -0.07 -0.29** 0.05 0.58** 1.00
抽雄期SPAD 0.49** 0.69** 0.42** 0.62** 0.42** 0.30** 0.14 -0.15 0.72** -0.61** -0.25* 0.16 -0.20 0.00 0.46** 0.62** 1.00

Table 2

Statistics of the factors"

排序
Rank		 特征值
Eigenvalue		 百分率(%)
Percentage		 累计百分率(%)
Cumulative percentage		 Chi-Square 自由度
Degree of freedom		 P
1 6.1306 36.0624 36.0624 1 723.59 152 0.0000
2 2.4026 14.1329 50.1952 1 367.20 135 0.0000
3 2.1898 12.8812 63.0764 1 243.67 119 0.0000
4 1.4831 8.7244 71.8008 1 091.42 104 0.0000
5 1.0747 6.3218 78.1226 981.85 90 0.0000
6 1.0170 5.9823 84.1049 899.05 77 0.0000
7 0.6898 4.0575 88.1624 787.52 65 0.0000
8 0.4909 2.8875 91.0499 709.14 54 0.0000
9 0.4095 2.4087 93.4586 653.99 44 0.0000
10 0.2760 1.6238 95.0824 598.48 35 0.0000
11 0.2301 1.3538 96.4362 567.79 27 0.0000
12 0.1902 1.1190 97.5553 539.18 20 0.0000
13 0.1418 0.8341 98.3893 511.52 14 0.0000
14 0.1309 0.7699 99.1593 491.75 9 0.0000
15 0.0942 0.5541 99.7134 455.95 5 0.0000
16 0.0486 0.2861 99.9995 402.19 2 0.0000
17 0.0001 0.0005 100.0000 0.00 0 1.0000

Table 3

Factor load matrix"

性状
Trait		 因子1
Factor 1		 因子2
Factor 2		 因子3
Factor 3		 共同度
Common degree		 特殊方差
Special variance
株高Plant height 0.7127 -0.1172 0.3420 0.6568 0.3432
穗位高Ear height 0.9023 0.1694 0.0334 0.8488 0.1512
抽雄日数Days from emerging to tassel 0.7932 -0.1696 -0.2469 0.8494 0.1506
吐丝日数Days from emerging to silking 0.8071 0.3969 -0.2263 0.8899 0.1101
ASI Anthesis-silking interval 0.2010 0.8811 -0.0268 0.8714 0.1286
单株产量Yield per plant 0.1589 0.2451 0.7698 0.6874 0.3126
穗长Ear length 0.2378 -0.3038 0.7360 0.7542 0.2458
穗行数Number of rows per ear -0.1644 0.0927 -0.1849 0.7001 0.2999
行粒数Number of kernels per row 0.7704 0.4337 0.3448 0.9104 0.0896
百粒重100-grain weight -0.7241 -0.4580 0.1549 0.8674 0.1326
出子率Grain rate -0.5545 0.2341 0.1366 0.4209 0.5791
容重Grams per liter -0.0641 0.8224 0.2174 0.7675 0.2325
秃尖长Bald tip length -0.0638 -0.5487 0.1200 0.7384 0.2616
性状
Trait		 因子1
Factor 1		 因子2
Factor 2		 因子3
Factor 3		 共同度
Common degree		 特殊方差
Special variance
脱粒水分Threshing water -0.2074 0.0892 0.7170 0.5730 0.4270
SPAD 苗期Seedling 0.6623 -0.0710 0.0381 0.4572 0.5428
拔节期Jointing 0.6423 0.0026 0.1305 0.5373 0.4627
抽雄期Tasseling 0.7405 0.3149 0.1695 0.6762 0.3238
方差贡献Variance contribution 5.6279 2.7081 2.1839 - -
累计贡献Cumulative contribution (%) 33.110 49.040 61.880 - -

Table 4

Simplification factors"

性状Trait 因子1
Factor 1		 因子2
Factor 2		 因子3
Factor 3
株高Plant height 0.7127 - -
穗位高Ear height 0.9023 - -
抽雄日数Days from emerging to tasseling 0.7932 - -
吐丝日数Days from emerging to silking 0.8071 - -
ASI Anthesis-silking interval - 0.8811 -
单株产量Yield per plant - - 0.7698
穗长Ear length - - 0.7360
穗行数Number of rows per ear - - -
行粒数Number of kernels per row 0.7704 - -
百粒重100-grain weight -0.7241 - -
出子率Grain rate -0.5545 - -
容重Grams per liter - 0.8224 -
秃尖长Bald tip length - - -
脱粒水分Threshing water - - 0.7170
SPAD 苗期Seedling 0.6623 - -
拔节期Jointing 0.6423 - -
抽雄期Tasseling 0.7405 - -
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