Plant Architecture and Yield-related Traits of Main Hybrid Rapeseed Varieties in the Middle and Lower Reaches of the Yangtze River: Correlation Analysis

doi:10.11924/j.issn.1000-6850.casb20190600348

Abstract

Abstract:

By analyzing field data for specific rapeseed varieties from multiple regions and years, we aim to reveal the relationship between plant architecture and yield-related factors. Five widely applied varieties in the past ten years were chosen in the middle and lower reaches of the Yangtze River, their field data from National Winter-type Rapeseed Regional Trials were used to analyze the characteristics and correlation relationships of plant architecture and yield-related traits within regions in different years. The plant architecture of five varieties all fit the criteria of high-yield type, with the branch height proportion of 0.34-0.39, and the main inflorescence proportion of 0.34-0.37, while no difference was observed among the varieties for these two factors. Silique layer density was extremely and positively correlated with plant yield and plot yield, with 0.64 and 0.22 as the correlation coefficient value, respectively. On the other hand, significant differences were commonly found in most yield and architecture-related traits between the middle and lower reaches of the Yangtze River, especially after the increase of growth density, the plant height, branch height and silique layer density all varied extremely and significantly, but not for plot yield. The analyzed results from long-term data in multiple regions could provide a more solid foundation for the selection of new-hybrid varieties in the future.

Key words: hybrid rapeseed, ideal plant architecture, field trials, yield-related factors

CLC Number:

S565.4

Guo Yiming, Wang Tonghua, Qu Liang, Chen Weijiang, Li Mei. Plant Architecture and Yield-related Traits of Main Hybrid Rapeseed Varieties in the Middle and Lower Reaches of the Yangtze River: Correlation Analysis[J]. Chinese Agricultural Science Bulletin, 2020, 36(22): 13-18.

Figures/Tables 4

References 20

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性状	秦优7号	秦优10号	中油杂2号	华油杂12号	沣油737	变异系数(CV)
株高/cm	168.3	170.3	168.7	182.8	154.2	0.10
分枝起点高度/cm	47.7	59.3	74.3	81.2	52.6	0.30
有效分枝数/个	7.4	8.6	6.4	6.8	7.6	0.25
主花序长/cm	61.3	66.4	58.9	59.9	53.1	0.13
主花序角果数/个	74.3	76.3	71.3	73.6	67.0	0.14
主花序结角密度/(个/cm)	1.2	1.2	1.2	1.2	1.3	0.13
单株角果数/个	365.4	355.9	248.4	249.7	315.1	0.42
每角果粒数/粒	21.2	24.1	19.7	20.3	20.2	0.17
分枝起点高占比	0.39	0.35	0.34	0.36	0.39	0.32
主花序长占比	0.34	0.36	0.37	0.35	0.36	0.15
角果层密度/(个/cm)	2.9	2.9	2.6	2.2	2.9	0.32
千粒重/g	3.60	3.60	3.89	3.36	3.55	0.11
单株产量/g	21.47	25.33	13.95	12.60	17.65	0.43
小区产量/kg	5.44	4.95	4.78	5.16	4.99	0.20

性状	秦优7号	秦优10号	中油杂2号	华油杂12号	沣油737	变异系数(CV)
株高/cm	168.3	170.3	168.7	182.8	154.2	0.10
分枝起点高度/cm	47.7	59.3	74.3	81.2	52.6	0.30
有效分枝数/个	7.4	8.6	6.4	6.8	7.6	0.25
主花序长/cm	61.3	66.4	58.9	59.9	53.1	0.13
主花序角果数/个	74.3	76.3	71.3	73.6	67.0	0.14
主花序结角密度/(个/cm)	1.2	1.2	1.2	1.2	1.3	0.13
单株角果数/个	365.4	355.9	248.4	249.7	315.1	0.42
每角果粒数/粒	21.2	24.1	19.7	20.3	20.2	0.17
分枝起点高占比	0.39	0.35	0.34	0.36	0.39	0.32
主花序长占比	0.34	0.36	0.37	0.35	0.36	0.15
角果层密度/(个/cm)	2.9	2.9	2.6	2.2	2.9	0.32
千粒重/g	3.60	3.60	3.89	3.36	3.55	0.11
单株产量/g	21.47	25.33	13.95	12.60	17.65	0.43
小区产量/kg	5.44	4.95	4.78	5.16	4.99	0.20

性状	长江中游			长江下游			P值
性状	2008—2012年	2013—2017年	平均	2008—2012年	2013—2017年	平均	P值
株高/cm	164.3	174.1	169.2	165.8	169.4	167.6	0.387
分枝起点高度/cm	68.7	76.6	72.7	45.3	56.6	51.0	<0.001^***
有效分枝数/个	6.7	6.7	6.7	8.0	8.6	8.3	<0.001^***
主花序长/cm	57.0	56.0	56.5	63.9	62.2	63.1	<0.001^***
主花序角果数/个	69.8	70.5	70.2	74.8	74.3	74.6	0.002^**
单株角果数/个	260.0	240.5	250.3	382.1	372.9	377.5	<0.001^***
每角果粒数/粒	19.4	20.0	19.7	23.6	21.1	22.4	<0.001^***
分枝高占比	0.33	0.39	0.36	0.38	0.38	0.38	0.172
主花序长占比	0.38	0.35	0.37	0.35	0.34	0.35	0.035^*
角果层密度/(个/cm)	2.7	2.2	2.5	3.1	2.9	3.0	<0.001^***
千粒重/g	3.80	3.45	3.63	3.56	3.66	3.61	0.712
单株产量/g	14.14	12.98	13.56	25.54	22.13	23.84	<0.001^***
小区产量/kg	4.89	5.02	4.96	5.12	5.46	5.29	0.007^**

性状	长江中游			长江下游			P值
性状	2008—2012年	2013—2017年	平均	2008—2012年	2013—2017年	平均	P值
株高/cm	164.3	174.1	169.2	165.8	169.4	167.6	0.387
分枝起点高度/cm	68.7	76.6	72.7	45.3	56.6	51.0	<0.001^***
有效分枝数/个	6.7	6.7	6.7	8.0	8.6	8.3	<0.001^***
主花序长/cm	57.0	56.0	56.5	63.9	62.2	63.1	<0.001^***
主花序角果数/个	69.8	70.5	70.2	74.8	74.3	74.6	0.002^**
单株角果数/个	260.0	240.5	250.3	382.1	372.9	377.5	<0.001^***
每角果粒数/粒	19.4	20.0	19.7	23.6	21.1	22.4	<0.001^***
分枝高占比	0.33	0.39	0.36	0.38	0.38	0.38	0.172
主花序长占比	0.38	0.35	0.37	0.35	0.34	0.35	0.035^*
角果层密度/(个/cm)	2.7	2.2	2.5	3.1	2.9	3.0	<0.001^***
千粒重/g	3.80	3.45	3.63	3.56	3.66	3.61	0.712
单株产量/g	14.14	12.98	13.56	25.54	22.13	23.84	<0.001^***
小区产量/kg	4.89	5.02	4.96	5.12	5.46	5.29	0.007^**

	PH	BH	BN	MIL	MSILN	MSIDEN	SILN	SDN	SDWT	PSDWT	BHP	MILP	SILLDEN	PLYR
PH	1
BH	0.40^***	1
BN	0.25^***	-0.46^***	1
MIL	0.35^***	-0.31^***	0.29^***	1
MSILN	0.52^***	-0.09	0.40^***	0.58^***	1
MSIDEN	0.14^*	0.24^***	0.10	-0.43^***	0.43^***	1
SILN	0.29^***	-0.55^***	0.78^***	0.44^***	0.52^***	0.06	1
SDN	-0.06	-0.30^***	0.01	0.20^**	0.001	-0.21^**	0.05	1
SDWT	0.08	0.08	0.09	0.10	0.01	-0.08	0.14^*	-0.09	1
PSDWT	0.20^**	-0.53^***	0.67^***	0.42^***	0.35^***	-0.12	0.77^***	0.23^***	0.15^*	1
BHP	-0.07	0.04	-0.05	-0.08	-0.06	0.02	0.01	-0.02	-0.14^*	-0.03	1
MILP	-0.06	-0.12	0.04	0.04	0.06	0.06	0.07	0.03	0.06	0.02	-0.57^***	1
SILLDEN	0.11	-0.37^***	0.66^***	0.27^***	0.41^***	0.16^*	0.88^***	-0.04	0.18^**	0.64^***	0.03	0.10	1
PLYR	0.27^***	0.09	0.29^***	0.05	0.14^*	0.09	0.21^***	0.01	0.09	0.25^***	-0.02	-0.08	0.22^***	1