Main Agronomic and Quality Characters of Coffee Plants Grafted and Not Grafted

doi:10.3969/j.issn.1000-2561.2019.07.001

Abstract

Abstract:

In order to apply the interspecific grafting technique in coffee production, five years of field experiments were carried out to study the main agronomic characters and quality characters between C. canephora cv. Reyan No.3 (No Grafted) and C. canephora scion grafted on C. liberica var. Dewevrei No.16 rootstock (Grafted). The results showed that the plant height, stem diameter, crown width and longest primary branches length were higher in 1-year-old grafted trees, but the difference was not significant. The number of primary branches and the number of the longest primary branches node of the grafted were significantly bigger than that of not grafted. The fruit number per node was significantly higher in the not grafted in 2015, but there was no significant difference in 2014 and 2016. The dry-fresh ratio, weight of 100 beans, single plant fruits weight were not significantly different between the not grafted and the grafted. As the number of fruit nodes per grafted plant increased, the yield of grafted plants not significantly decreased. In summary, there were no effects on the yield and quality characters of grafted plants, the interspecific grafting could be applied in coffee production.

Key words: Coffea canephora Pierre ex Froehner, interspecific grafting, agronomic characters, quality characters

CLC Number:

S571.2

YAN Lin,DONG Yunping,HUANG Lifang,SUN Yan,ZONG Jiyong,LIN Xingjun,WANG Xiaoyang,LONG Yuzhou. Main Agronomic and Quality Characters of Coffee Plants Grafted and Not Grafted[J]. Chinese Journal of Tropical Crops, 2019, 40(7): 1253-1258.

Figures/Tables 8

Tab. 1 Growth parameters of annual coffee plants grafted or not grafted

处理Treatment	株高 Plant height /cm	茎粗 Stem diameter /mm	冠幅 Crown /cm	一级分枝数 Primary branches	最长一级分枝 The longest primary branches
处理Treatment	株高 Plant height /cm	茎粗 Stem diameter /mm	冠幅 Crown /cm	一级分枝数 Primary branches	长度 Length/cm	粗度 Diameter/mm	节数Number of nodes
NG	96.57±2.70^a	19.55±0.90^a	96.46±3.97^a	7.32±0.41^b	52.68±2.74^a	5.72±0.21^a	7.25±0.47^b
G	101.07±2.99^a	22.29±1.21^a	106.29±4.03^a	8.71±0.45^a	56.50±2.41^a	5.49±0.19^a	8.93±0.52^a

Tab. 2 Cherry numbers per node of coffee plants grafted or not grafted fruits per node

处理Treatment	2014	2015	2016
NG	11.33±0.61^a	11.60±0.48^a	11.57±0.68^a
G	11.75±0.57^a	10.19±0.44^b	10.75±0.59^a

Fig. 1 Difference of cherry numbers per node of coffee plants grafted or not grafted in different years Different lowercase letters between treatments indicate significant difference (P<0.05).

Tab. 3 Comparison on dry-fresh ratio, weights of 100 beans between coffee plants grafted or not grafted

处理 Treatment	干鲜比Dry-fresh ratio/%			百粒重Weights of 100 beans/g
处理 Treatment	2015	2016	2017	2015	2016	2017
NG	16.23±0.25^a	18.13±0.33^a	17.90±0.33^a	15.03±0.63^a	14.95±0.43^a	14.05±0.42^a
G	16.33±0.35^a	17.82±0.32^a	18.93±0.39^a	15.13±0.23^a	15.13±0.28^a	15.15±0.51^a

Fig. 2 Difference of dry-fresh ratio, weights of 100 beans between coffee plants grafted or not grafted in different years Different lowercase letters between treatments indicate significant difference (P<0.05).

Fig. 3 Regression analysis on cherry numbers per tree and single plant immature fruit weight on coffee plants grafted or not grafted

Tab. 4 Comparison on single plant fruits weight between coffee plants grafted or not graft g

处理 Treatment	2015	2016	2017
NG	4799.10±702.13^a	5569.07±621.73^a	7765.96±1627.40^a
G	4357.80±715.58^a	4153.68±851.20^a	6331.68±1099.77^a

Fig. 4 Comparison on single plant fruits weight between coffee plants grafted or not grafted in different years Same lowercase letters between treatments indicate not significant difference (P>0.05).

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