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Foliar Indicators and Sweet Cherry Production Efficiency in Central Leader and Kym Green Bush Training Systems in Chile.
- Source :
-
International Journal of Fruit Science . 2021, Vol. 21 Issue 1, p1094-1103. 10p. - Publication Year :
- 2021
-
Abstract
- Canopy development and production efficiency variations were evaluated in four sweet cherry (Prunus avium L.) cultivars: 'Bing', 'Lapins', 'Sweetheart' and 'Regina', grafted on different vigor rootstocks: 'Colt', 'Cab-6P, 'Maxma-14' and 'Gisela-12', and conducted in two training systems: Central Leader (CL) and Kym Green Bush (KGB), growing in Chile. Leaf indicators were calculated after tree defoliation. A principal components analysis (PCA) was conducted to select indicators that explain the variation among the combinations. Results showed that leaf size and number varied between different cultivar/rootstock combinations and training systems. By means of two principal components, the model employed could explain 72% of the data variability. The most relevant indicators for the PC1 were: leaf weight per hectare (0.98) and leaf area index (0.97), with a significant training system effect, whereas for the PC2 they were: leaf weight per leaf area (0.85) and production per leaf area (0.72), mainly for productive efficiency. In 'Lapins'/'Colt', the KGB system presented a higher weight and leaf area than CL, with almost double the leaf weight per hectare and leaf area index, due mainly to a 37% leaf area per tree and 20% higher tree number/ha in KGB. However, average production per leaf area reached 0.49 kg m−2, without distinction between training systems. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SWEET cherry
*ROOTSTOCKS
*LEAF area index
*LEAF area
*PRINCIPAL components analysis
Subjects
Details
- Language :
- English
- ISSN :
- 15538362
- Volume :
- 21
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Fruit Science
- Publication Type :
- Academic Journal
- Accession number :
- 154438874
- Full Text :
- https://doi.org/10.1080/15538362.2021.1990187