Changes in growth and photosynthetic patterns of oil palm (Elaeis guineensis Jacq.) seedlings exposed to short-term CO2 enrichment in a closed top chamber

• Autorzy: Ibrahim M.H. , Jaafar H. Z. E. , Harun M. H. , Yusop M. R.
• Języki publikacji: EN

Abstrakty

EN

Three varieties of oil palm seedlings (Deli Yangambi, Deli Urt, Deli AVROS) were exposed to three levels of CO₂ (400, 800, 1,200 μmol/mol) in split plot design to determine growth (net assimilation rate, NAR; relative growth rate, RGR) and photosynthetic patterns of the seedlings under short-term CO₂ exposure of 15 weeks. Increasing CO₂ from 400 to 800 and 1,200 μmol/mol significantly enhanced total biomass and leaf area, net photosynthesis (A) and water use efficiency (WUE) especially from weeks 9 to 15. By the end of week 15, total biomass increased by 113%, and A and WUE by one- and fivefold, respectively, while specific leaf area decreased by 37%. Both enhanced biomass and A under elevated CO₂ were effective in modifying NAR and RGR as shown by high correlation coefficient values (r²= 0.68 and 0.72; r²= 0.63 and 0.67, respectively), although WUE seemed to have more influence over the NAR (r²= 0.97) and RGR (r²= 0.93). Neither interspecific preference nor its interaction with CO₂ imposed any significant effect on parameters observed. Growth improvement with CO₂ seemed able to produce healthy, bigger and vigorous oil palm seedlings, and the technique may have potential to be developed for use to reduce nursery period.

Słowa kluczowe

EN

plant growth; photosynthesis; oil palm zob.African oil palm; African oil palm; macaw-fat zob.African oil palm; Elaeis guineensis; seedling; plant development; growth rate; short-term exposure; carbon dioxide

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2010
• Tom: 32
• Numer: 2
• Opis fizyczny: p.305-313,fig.,ref.

Twórcy

autor

Ibrahim M.H.

• Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

autor

Jaafar H. Z. E.

• Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

autor

Harun M. H.

• Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
• Malaysian Palm Oil Board, P.O. Box 10620, Kuala Lumpur, Malaysia

autor

Yusop M. R.

• Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

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