The Regulation and Evaluation Indexes Screening of Chemical Topping on Cotton’s Plant Architecture
ZHU LingXiao,1, LIU LianTao,1, ZHANG YongJiang1, SUN HongChun1, ZHANG Ke1, BAI ZhiYing1, DONG HeZhong2, LI CunDong,11College of Agronomy, Hebei Agricultural University/State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province, Baoding 071000, Hebei 2Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100
Abstract 【Objective】Plant architecture is of major agronomic importance because it strongly influences the suit-ability of a plant for cultivation, its overall yield and its economic coefficient. This study was aimed to explore the effects of chemical topping on the traits of cotton’s plant architecture and to make a comprehensive analysis, thus providing a theoretical basis for the application and popularization of chemical topping. 【Method】Three topping treatments, including manual topping, chemical topping and non-decapitation treatment, were established by using Jimian863 and Nongda601, which were widely grown in Yellow River Valley, in Hebei Agriculture University experimental base during 2015-2016, yield components, plant height, stem diameter, number of fruit branches and other plant architecture related indicators were measured, carry out research on the effect of chemical topping on plant architecture. 【Result】There was no significant difference in seed cotton yield between manual topping treatment and chemical topping treatment, and both treatments were significantly higher than that of non-decapitation treatment. Compared with non-decapitation treatment, chemical topping increased the seed cotton yield of Jiman863 and Nongda601 by 7.19% and 6.78%, respectively. Compared with non-decapitation treatment, chemical topping significantly decreased the cotton plant, internode number, fruiting branches number and fruiting node number, and significantly increased the diameter ratio of near and far branches. Chemical topping significantly decreased the internode length of stem and upper fruiting branches length. The effect of chemical topping on cotton’s plant architecture could be evaluated by the plant height and the diameter ratio of near and far branches according to Pearson correlation analysis, principal component analysis and grey correlation analysis. 【Conclusion】Chemical topping treatment had the same purpose on the regulation of cotton’s vegetative and regenerative growth as manual topping treatment, and had no significant effect on seed cotton yield. The plant height and the diameter ratio of near and far branches were taken as the main evaluation indexes for the regulation of chemical topping on cotton’s plant architecture. Keywords:cotton;plant architecture;manual topping;chemical topping;yield;principal component analysis;grey correlation analysis
PDF (1232KB)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 祝令晓, 刘连涛, 张永江, 孙红春, 张科, 白志英, 董合忠, 李存东. 化学封顶对棉花株型的调控及评价指标筛选[J]. 中国农业科学, 2020, 53(20): 4152-4163 doi:10.3864/j.issn.0578-1752.2020.20.005 ZHU LingXiao, LIU LianTao, ZHANG YongJiang, SUN HongChun, ZHANG Ke, BAI ZhiYing, DONG HeZhong, LI CunDong. The Regulation and Evaluation Indexes Screening of Chemical Topping on Cotton’s Plant Architecture[J]. Scientia Acricultura Sinica, 2020, 53(20): 4152-4163 doi:10.3864/j.issn.0578-1752.2020.20.005
Table 1 表1 表12015—2016不同打顶处理对棉花产量及其构成因素的影响 Table 1Effect of different topping treatments on cotton yield and yield components in 2015 and 2016
年份 Year
品种 Cultivar
处理 Treatment
单株铃数 Boll number per plant
单铃重 Boll weight (g)
籽棉产量 Seed cotton yield (kg·hm-2)
衣分 Lint percent (%)
皮棉产量 Lint cotton yield (kg·hm-2)
2015
JM863
MT
17.70±0.48a
6.23±0.33a
4266.81±165.79a
38.68±0.48c
1788.13±78.66a
CT
17.98±1.31a
5.38±10.42ab
4157.54±328.77a
41.41±0.41b
1721.70±144.06a
NT
14.75±0.95b
5.85±0.09b
3791.16±378.22b
43.06±0.27a
1632.47±217.67b
ND601
MT
11.21±0.410a
6.41±0.58a
3480.00±196.82a
40.44±0.55c
1407.35±89.80a
CT
11.13±1.46a
6.24±0.48a
3222.13±233.56ab
43.83±0.24a
1412.25±120.29a
NT
10.62±1.46a
6.26±0.24a
3003.50±262.27b
42.29±0.33b
1270.02±94.68b
2016
JM863
MT
17.67±0.59a
6.27±0.06a
4397.76±95.52a
39.33±0.85b
1730.60±75.22a
CT
17.33±0.31a
5.89±0.10b
4281.28±90.74a
41.37±0.49a
1770.79±31.87a
NT
15.70±0.67b
5.81±0.11b
4041.05±156.19b
42.70±0.45a
1725.24±61.45a
ND601
MT
14.10±0.54a
6.72±0.36a
3390.22±110.57a
39.94±1.21b
1355.33±84.33ab
CT
13.05±0.35a
7.06±0.38a
3363.72±16.79a
42.89±0.79a
1442.877±28.10a
NT
11.62±0.41b
7.15±0.12a
3135.93±56.40ab
41.26±0.58ab
1293.88±24.26b
方差分析 Source of variance
Year (Y)
NS
NS
NS
NS
NS
Cultivar (C)
**
**
**
NS
**
Treatment (T)
**
NS
*
**
*
Y×C
NS
NS
NS
NS
NS
Y×T
NS
NS
NS
NS
NS
C×T
NS
NS
NS
**
NS
Y×C×T
NS
NS
NS
NS
NS
不同小写字母代表5%水平差异显著,*和**分别表示在0.05和0.01水平上差异显著,NS表示差异不显著(P>0.05)。下同 Different letters within the column shown significant difference at 5% level. * and ** mean significant difference at 0.05 and 0.01 probability levels, respectively, NS means no significant difference (P>0.05). The same as below
Table 2 表2 表22015—2016不同打顶处理对棉花主茎节数及节间长度的影响 Table 2Effect of different topping treatments on internode number and internode length of cotton in 2015-2016
Table 4 表4 表4棉株株型相关性状及产量的皮尔逊相关矩阵 Table 4Pearson correlation matrix of cotton shoot architecture parameters and yield
指标 Index
产量 SCY
株高 PH
茎粗 SD
节间数 IN
节间长度 IL
果枝数 FBN
果节数 FNN
上部果枝长度 FBL
近远端直径比 DRNB
产量SCY
1
株高PH
-0.413
1
茎粗SD
0.618*
-0.648*
1
节间数IN
-0.483
0.853**
-0.332
1
节间长度IL
-0.143
0.875**
-0.290
-0.850**
1
果枝数FBN
0.001
-0.695*
0.062
-0.739**
-0.951**
1
果节数FNN
0.265
-0.883**
0.561
-0.715**
-0.754**
0.592*
1
上部果枝长度 FBL
0.022
-0.639*
0.035
0.685*
0.779**
-0.738**
-0.697*
1
近远端直径比DRNB
-0.072
-0.456
0.288
-0.272
-0.431
0.430
0.691*
-0.273
1
SCY:产量Seed cotton yield;PH:株高Plant height;SD:茎粗Stem diameter;IN:节间数Internode number;IL:节间长度Internode length;FBN:果枝数Fruiting branches number;FNN:果节数Fruiting node number;FBL:上部果枝长度Upper fruiting branches length;DRNB:近远端直径比Diameter ratio of near and far branches
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