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Volume 11
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International Journal of Plant Biology is published by MDPI from Volume 13 Issue 1 (2022). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with PAGEPress.
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Article

Differences in Leaf Area, Trichome Density, and Xylem Structure between the Two Types of Theobroma cacao L. Cultivation: With or without Shade Plants

by
Erma Prihastanti
* and
Yulita Nurchayati
Department of Biology, Faculty of Science and Mathematics, Diponegoro University, Semarang 50275, Central Java, Indonesia
*
Author to whom correspondence should be addressed.
Int. J. Plant Biol. 2020, 11(1), 8790; https://doi.org/10.4081/pb.2020.8790
Submission received: 20 July 2020 / Revised: 10 October 2020 / Accepted: 10 October 2020 / Published: 16 November 2020

Abstract

This study aimed to analyze the structure and density of non-glandular trichomes and the area of cocoa leaves, and the differences of xylem vessel structures on various shade tree composition. The leaf area and length, and trichomes were observed. The xylem vessel structure was observed from the root system. The result showed the area of cocoa plots without shade tree has more varied leaves size, in which upper canopy was smaller than the bottom. The area with various shade had a relatively equal size between the upper and the lower of the canopy. The three stellate-shaped non-glandular trichomes were found on the leaf venations only with the density in two plots increased with time. The xylem width area to the whole root width area ratio (k) in various shade trees was lower (k = 0.641) than that of without shade trees (k = 0.718). The higher k values indicated xylem structure without the shade tree had more xylem cells, and the pores was smaller compared to the plot with various shade trees.
Keywords: trichomes; leaf area; xylem structure; shade tree; Theobroma cacao L. trichomes; leaf area; xylem structure; shade tree; Theobroma cacao L.

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MDPI and ACS Style

Prihastanti, E.; Nurchayati, Y. Differences in Leaf Area, Trichome Density, and Xylem Structure between the Two Types of Theobroma cacao L. Cultivation: With or without Shade Plants. Int. J. Plant Biol. 2020, 11, 8790. https://doi.org/10.4081/pb.2020.8790

AMA Style

Prihastanti E, Nurchayati Y. Differences in Leaf Area, Trichome Density, and Xylem Structure between the Two Types of Theobroma cacao L. Cultivation: With or without Shade Plants. International Journal of Plant Biology. 2020; 11(1):8790. https://doi.org/10.4081/pb.2020.8790

Chicago/Turabian Style

Prihastanti, Erma, and Yulita Nurchayati. 2020. "Differences in Leaf Area, Trichome Density, and Xylem Structure between the Two Types of Theobroma cacao L. Cultivation: With or without Shade Plants" International Journal of Plant Biology 11, no. 1: 8790. https://doi.org/10.4081/pb.2020.8790

APA Style

Prihastanti, E., & Nurchayati, Y. (2020). Differences in Leaf Area, Trichome Density, and Xylem Structure between the Two Types of Theobroma cacao L. Cultivation: With or without Shade Plants. International Journal of Plant Biology, 11(1), 8790. https://doi.org/10.4081/pb.2020.8790

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