28Jul 2017

FLOWERING AND FRUITING SEASONAL CHANGES OF SIX ACCESSIONS OF JATROPHA CURCAS L. IN A SEMI-ARID REGION OF SENEGAL.

  • Ecole Nationale Sup?rieure d?Agriculture (ENSA), Universit? de Thi?s (UT), BP A 296, Route de Khombole, Thi?s, S?n?gal.
  • UFR des Sciences Agronomiques d?Aquaculture et de Technologies Alimentaires (UFR S2ATA)/Universit? Gaston Berger de Saint-Louis (UGB), Route de Ngall?le BP 234 Saint-Louis, S?n?gal.
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Jatropha curcas is the priority species for biofuel promotion in Senegal. However the lack of knowledge on floral biology and fruiting of this plant remains a problem to increase its yield and improve farmers? adoption. The objectives of this study were to assess seasonal changes on flowering and fruiting of six accessions of J curcas in semi-arid area in Senegal. In this study the total number of inflorescences, flowers and fruits were evaluated during six months on four years old plants, installed in the Agricultural Engineering School of Thies. The results showed significant effect of factors (season, accession) and interaction between them on floral and fruiting traits of J. curcas. Due to more favorable climatic conditions, the performance of flowering is better in wet season. During this season, the number of male and female flowers ranged, respectively from 107.47?191.60 and from 2.47?11.87 per inflorescence. Consequently, ripe fruits production was higher in wet season and varied between 66 and 97% of the total production. Two peaks of flowering were observed; the first one occurred in dry season and the second, with the highest number of inflorescences, arrived in wet season. Fruiting patterns had highest concentration between September 15th and October 3rd. For biofuel production in semi-arid areas of Senegal, three accessions were identified due to high seed yields.

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[Ibrahima Diedhiou, Roger Bayala, Moustapha Diere Sagna and Papa Madiallacke Diedhiou. (2017); FLOWERING AND FRUITING SEASONAL CHANGES OF SIX ACCESSIONS OF JATROPHA CURCAS L. IN A SEMI-ARID REGION OF SENEGAL. Int. J. of Adv. Res. 5 (Jul). 2138-2148] (ISSN 2320-5407). www.journalijar.com

Ibrahima DIEDHIOU
University of Thiès

DOI:

Article DOI: 10.21474/IJAR01/4953      
DOI URL: http://dx.doi.org/10.21474/IJAR01/4953

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