Phenetic Analysis of Cultivated Black Pepper (Piper nigrum L.) in Malaysia
Joint Authors
Chen, Y. S.
Dayod, M.
Tawan, C. S.
Source
International Journal of Agronomy
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-02
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Phenetic analysis of all the black pepper cultivars in Malaysia is crucial to determine the morphological difference among them.
The objective of this study is to ascertain the morphological distinctness and interrelationships among the cultivars to ensure registration of each variety under the Plant Variety Protection Act, as a prerequisite toward implementation of a monovarietal farm policy in the future.
Cluster analysis revealed that cultivars “Semongok Aman” and “Semongok 1” have high distinctness values for identification; thus, varietal diagnosis for the two cultivars is easy.
Cultivars “Nyerigai,” “India,” “Semongok Perak,” and “Semongok Emas” were grouped in the most diverse clusters among the ten cultivars studied.
The four cultivars have a similarity index as high as 92%; however, investigation of leaf width, leaf width-length ratio, seed weight, and conversion rate (fresh to black pepper) gives the ability to determine the characteristic differences.
Cultivars “Lampung Daun Lebar” and “Yong Petai” have a similarity of 96%; however, the two showed distinctive differences in leaf width, leaf length-width ratio, spike thickness, and spike length characteristics.
On the contrary, cultivars “Kuching” and “Sarikei” showed the highest similarity index, at 98%, and thus are among the most difficult cultivars to diagnose the morphological difference.
However, the principle component analysis showed that the fruit size and seed diameter were the important diagnostic key characteristics.
Overall, the leaf width, leaf width-length ratio, fruit spike, and conversion rate characteristics are among the key characteristics to differentiate among cultivars of black pepper in Malaysia.
At the same time, the principle component analysis carried out has enlightened some interrelationships on the morphological characteristics between cultivars.
This information is crucial for the future of the plant varietal improvement program in Malaysia.
American Psychological Association (APA)
Chen, Y. S.& Dayod, M.& Tawan, C. S.. 2018. Phenetic Analysis of Cultivated Black Pepper (Piper nigrum L.) in Malaysia. International Journal of Agronomy،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1166166
Modern Language Association (MLA)
Chen, Y. S.…[et al.]. Phenetic Analysis of Cultivated Black Pepper (Piper nigrum L.) in Malaysia. International Journal of Agronomy No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1166166
American Medical Association (AMA)
Chen, Y. S.& Dayod, M.& Tawan, C. S.. Phenetic Analysis of Cultivated Black Pepper (Piper nigrum L.) in Malaysia. International Journal of Agronomy. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1166166
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166166