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A Meta-analysis of latex physiology studies reveals limited adoption and difficulties to interpret some latex diagnosis parameters in Hevea brasiliensis

Junaidi Junaidi, Clément-Vidal Anne, Nuringtyas Tri Rini, Gohet Eric, Subandiyah Siti, Montoro Pascal. 2023. A Meta-analysis of latex physiology studies reveals limited adoption and difficulties to interpret some latex diagnosis parameters in Hevea brasiliensis. Hayati Journal of Biosciences, 30 (2) : 358-371.

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Résumé : Latex diagnosis is widely adopted in natural rubber-producing countries to optimize the natural rubber production through a physiological-based latex-harvesting system management. This study is the first bibliographical searching and meta-analysis on the variation of latex physiological parameters i.e. sucrose, inorganic phosphorus, thiols, and total solid content. The study used information extracted from 158 scientific papers. Descriptive statistics, agglomerative hierarchical clustering, and principal component analysis were performed to characterize applications of latex diagnosis, how often parameters are used and interpreted as well as the variation of its parameter values. From 158 papers, latex diagnosis parameters were used in 114 agronomy, 22 in physiology, and 22 in breeding papers. The agglomerative hierarchical clustering analysis indicated that sucrose and inorganic phosphorus contents were clustered together and total solid and thiols contents were located in another cluster. The average values of the total solid content, sucrose, inorganic phosphorus and thiols were 43.9%, 9.4 mM, 16.5 mM, and 0.52 mM, respectively. The percentage of interpretation is 63.3% for sucrose, 54.4% for inorganic phosphorus, 47.5% for thiols, and 41.1% for the total solid content. The low interpretation of thiols and total solid contents question their relevance in latex diagnosis. The low adoption of latex diagnosis in breeding could hinder the selection of activities leads to a limitation of selection for long-term high yielding and stress-adapted clones.

Mots-clés Agrovoc : latex, Hevea brasiliensis, physiologie végétale

Mots-clés libres : Antioxidant, Breeding, Rubber, Latex diagnosis, Tapping system, Oxidative stress

Classification Agris : F60 - Physiologie et biochimie végétale
F30 - Génétique et amélioration des plantes

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Agences de financement hors UE : Agropolis Fondation, Southeast Asian Regional Center for Graduate Study and Research in Agriculture

Projets sur financement : (FRA) Labex AGRO 2011-LBX-002

Auteurs et affiliations

  • Junaidi Junaidi, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0003-2294-040X
  • Clément-Vidal Anne, CIRAD-BIOS-UMR AGAP (FRA)
  • Nuringtyas Tri Rini, Gadjah Mada University (IDN)
  • Gohet Eric, CIRAD-PERSYST-UMR ABSys (KHM) ORCID: 0000-0002-0379-0592
  • Subandiyah Siti, Gadjah Mada University (IDN)
  • Montoro Pascal, CIRAD-BIOS-UMR AGAP (FRA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/605088/)

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