Variations Analysis of Latex Yield and Physiological Traits in Hevea brasiliensis Wickham Germplasm Resources

doi:10.3969/j.issn.1000-2561.2020.05.008

Abstract

Abstract:

128 clones of Wakeham germplasm rubber trees, which were tapped, were used as the research object in this study. The average annual latex yield of each tapping from clonal ramet, dry rubber content in latex and sucrose content, inorganic phosphorus content, mercaptan content, total solids content in latex were determined, and the correlation analysis of population variation was analyzed combined with the data of rubber tree diometer at breast height (DBH) at the end of 2017. The sucrose content was in the range of 3.14-35.50 mmol/L, with the largest coefficient of variation for 53.2%. Average annual latex yield of each tapping from clonal ramet was in the range of 24.2-475.0 mL, with a variation coefficient 51.5%. Sucrose content and dry rubber content, average annual latex yield of each tapping from clonal ramet was significantly negative correlated (P<0.05). All clones could be divided into three types by K-means cluster analysis. The first class was accounted for 10%, with the highest average annual latex yield of each tapping from clonal ramet (351.0 mL) and the highest average DBH circumference (59.5 cm). The fourth tapping latex yield was the highest (196.2 mL) with the lowest sucrose content (7.83 mmol/L) and no significant difference of other physiological indexes.

Key words: Hevea brasiliensis, germplasm resources, latex physiology, latex yield, variation

CLC Number:

S794.1

YANG Tian,ZHAO Qi,LI Xiaoqin,ZHANG Fengliang,MAO Changli,HU Yonghua,WU Yu. Variations Analysis of Latex Yield and Physiological Traits in Hevea brasiliensis Wickham Germplasm Resources[J]. Chinese Journal of Tropical Crops, 2020, 41(5): 893-900.

Figures/Tables 8

References 16

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测定参数 Parameters	最小值 Minimum value	最大值 Maximum value	平均值 Mean	标准差 Standard deviation	变异系数 Coefficient of variation/%
胸径围/cm	47.0	69.0	57.3	5.0	8.7
年均刀次产量/mL	24.2	475.0	172.3	88.8	51.5
单刀胶乳产量/mL	50.0	345.0	114.3	56.6	49.5
无机磷含量/(mmol·L^-1)	4.91	28.10	11.81	4.47	37.8
硫醇含量/(mmol·L^-1)	0.317	0.672	0.466	0.068	14.6
蔗糖含量/(mmol·L^-1)	3.14	35.50	10.71	5.70	53.2
干胶含量/%	29.3	49.2	40.6	4.4	10.8
总固形物含量/%	41.5	65.4	51.0	4.1	8.0

测定参数 Parameters	最小值 Minimum value	最大值 Maximum value	平均值 Mean	标准差 Standard deviation	变异系数 Coefficient of variation/%
胸径围/cm	47.0	69.0	57.3	5.0	8.7
年均刀次产量/mL	24.2	475.0	172.3	88.8	51.5
单刀胶乳产量/mL	50.0	345.0	114.3	56.6	49.5
无机磷含量/(mmol·L^-1)	4.91	28.10	11.81	4.47	37.8
硫醇含量/(mmol·L^-1)	0.317	0.672	0.466	0.068	14.6
蔗糖含量/(mmol·L^-1)	3.14	35.50	10.71	5.70	53.2
干胶含量/%	29.3	49.2	40.6	4.4	10.8
总固形物含量/%	41.5	65.4	51.0	4.1	8.0

分级编号 Grade	胸径围 DBH/ cm		频数 Counts/个	级内均值 Means/cm	年均刀次产量 Average annual latex yield/mL	单刀胶乳产量 Once latex yield/mL	无机磷含量 Inorganic phosphorus content/ (mmol·L^-1)		硫醇含量 Mercaptan content/ (mmol·L^-1)	蔗糖含量 Sucrose content/ (mmol·L^-1)	干胶含量 Dry rubber content/%	总固形物含量 Total solids content/%
1	47~47.9		3	47.1	106.7	70.0	14.59		0.4300	16.27	35.91	49.13
2	48~48.9		2	48.0	80.8	97.5	19.43		0.5100	17.83	37.30	51.60
3	49~49.9		3	49.1	126.1	150.0	11.27		0.5100	14.15	36.80	47.83
4	50~50.9		4	50.1	166.0	110.0	16.19		0.4490	10.25	37.98	51.25
5	51~51.9		5	51.1	179.2	157.0	12.28		0.4906	12.17	36.03	51.88
6	52~52.9		5	52.1	254.2	123.0	11.45		0.4774	8.72	44.52	48.38
7	53~53.9		10	53.1	165.3	111.5	10.45		0.4422	11.61	40.61	51.27
分级编号 Grade		胸径围 DBH/ cm		频数 Counts/ 个	级内均值 Means/cm	年均刀次产量 Average annual latex yield/mL	单刀胶乳产量 Once latex yield/mL	无机磷含量 Inorganic phosphorus content/ (mmol·L^-1)	硫醇含量 Mercaptan content/ (mmol·L^-1)	蔗糖含量 Sucrose content/ (mmol·L^-1)	干胶含量 Dry rubber content/%	总固形物含量 Total solids content/%
8		54~54.9		11	54.3	153.8	94.5	12.67	0.4588	11.64	40.80	49.87
9		55~55.9		10	55.4	149.0	91.0	10.82	0.4911	11.67	40.74	52.68
10		56~56.9		10	56.1	146.1	107.0	10.40	0.4862	13.26	39.11	50.96
11		57~57.9		8	57.2	198.6	137.5	8.40	0.4489	9.34	40.69	50.51
12		58~58.9		5	58.0	107.8	116.0	7.60	0.4452	10.71	42.91	51.32
13		59~59.9		8	59.3	197.2	115.0	12.86	0.4708	12.97	42.72	47.80
14		60~60.9		10	60.1	140.6	83.0	13.69	0.4679	9.00	40.62	52.27
15		61~61.9		5	61.2	200.7	162.0	11.09	0.4622	8.22	39.26	51.48
16		62~62.9		7	62.2	196.4	106.4	10.40	0.4653	7.63	42.55	54.40
17		63~63.9		11	63.1	236.4	148.6	11.84	0.4645	8.13	41.03	51.68
18		64~66.9		5	65.3	218.5	113.0	15.25	0.4828	7.18	42.58	50.48
19		67~67.9		4	67.1	150.0	112.5	13.35	0.4500	10.41	41.06	49.85
20		68~68.9		1	68.0	236.7	85.0	17.87	0.4000	9.17	49.21	55.40
21		69~69.9		1	69.0	43.3	75.0	5.27	0.4100	12.27	36.10	52.20

分级编号 Grade	胸径围 DBH/ cm		频数 Counts/个	级内均值 Means/cm	年均刀次产量 Average annual latex yield/mL	单刀胶乳产量 Once latex yield/mL	无机磷含量 Inorganic phosphorus content/ (mmol·L^-1)		硫醇含量 Mercaptan content/ (mmol·L^-1)	蔗糖含量 Sucrose content/ (mmol·L^-1)	干胶含量 Dry rubber content/%	总固形物含量 Total solids content/%
1	47~47.9		3	47.1	106.7	70.0	14.59		0.4300	16.27	35.91	49.13
2	48~48.9		2	48.0	80.8	97.5	19.43		0.5100	17.83	37.30	51.60
3	49~49.9		3	49.1	126.1	150.0	11.27		0.5100	14.15	36.80	47.83
4	50~50.9		4	50.1	166.0	110.0	16.19		0.4490	10.25	37.98	51.25
5	51~51.9		5	51.1	179.2	157.0	12.28		0.4906	12.17	36.03	51.88
6	52~52.9		5	52.1	254.2	123.0	11.45		0.4774	8.72	44.52	48.38
7	53~53.9		10	53.1	165.3	111.5	10.45		0.4422	11.61	40.61	51.27
分级编号 Grade		胸径围 DBH/ cm		频数 Counts/ 个	级内均值 Means/cm	年均刀次产量 Average annual latex yield/mL	单刀胶乳产量 Once latex yield/mL	无机磷含量 Inorganic phosphorus content/ (mmol·L^-1)	硫醇含量 Mercaptan content/ (mmol·L^-1)	蔗糖含量 Sucrose content/ (mmol·L^-1)	干胶含量 Dry rubber content/%	总固形物含量 Total solids content/%
8		54~54.9		11	54.3	153.8	94.5	12.67	0.4588	11.64	40.80	49.87
9		55~55.9		10	55.4	149.0	91.0	10.82	0.4911	11.67	40.74	52.68
10		56~56.9		10	56.1	146.1	107.0	10.40	0.4862	13.26	39.11	50.96
11		57~57.9		8	57.2	198.6	137.5	8.40	0.4489	9.34	40.69	50.51
12		58~58.9		5	58.0	107.8	116.0	7.60	0.4452	10.71	42.91	51.32
13		59~59.9		8	59.3	197.2	115.0	12.86	0.4708	12.97	42.72	47.80
14		60~60.9		10	60.1	140.6	83.0	13.69	0.4679	9.00	40.62	52.27
15		61~61.9		5	61.2	200.7	162.0	11.09	0.4622	8.22	39.26	51.48
16		62~62.9		7	62.2	196.4	106.4	10.40	0.4653	7.63	42.55	54.40
17		63~63.9		11	63.1	236.4	148.6	11.84	0.4645	8.13	41.03	51.68
18		64~66.9		5	65.3	218.5	113.0	15.25	0.4828	7.18	42.58	50.48
19		67~67.9		4	67.1	150.0	112.5	13.35	0.4500	10.41	41.06	49.85
20		68~68.9		1	68.0	236.7	85.0	17.87	0.4000	9.17	49.21	55.40
21		69~69.9		1	69.0	43.3	75.0	5.27	0.4100	12.27	36.10	52.20

测定参数 Parameters	胸径围 DBH	年均刀次产量 Average annual latex yield	单刀胶乳产量 Once latex yield	无机磷含量 Inorganic phosphorus content	硫醇含量 Mercaptan content	蔗糖含量 Sucrose content	干胶含量 Dry rubber content
年均刀次产量	0.2098	1
单刀胶乳产量	-0.1065	0.4517^*	1
无机磷含量	-0.2169	0.1900	-0.1911	1
硫醇含量	0.4782^*	0.0092	0.4183	0.1453	1
蔗糖含量	-0.6096^**	-0.6931^**	-0.2836	0.1994	0.2411	1
干胶含量	0.4878^*	0.6546^**	-0.0956	0.1527	-0.3208	-0.5831^**	1
总固形物含量	0.4308	0.0543	-0.2483	0.0760	-0.3641	-0.3318	0.2888