PGR News from the Pacific

Posted 12:32 PM by Tevita

Bitter gourd: High value, high input

From : The World Vegetable Center Newsletter

Bitter gourd (Momordica charantia) is regarded as one of the world’s major vegetable crops and has great economic importance. It also is a promising candidate as a remedy
that can help millions in the developing world who suffer from metabolic disorders such as type-2 diabetes. These positive features may make bitter gourd look like an
all-purpose crop; however, to be successful on a global scale, this indigenous crop requires attention from breeders as well as production system specialists.
A traditional vegetable grown throughout tropical and subtropical Asia, bitter gourd is planted on more than 60,000 ha annually—but major insecttransmitted diseases such as Cucurbit aphid-borne yellow virus (CABYC), Papaya ringspot virus (PRSV), and Zucchini yellow mosaic virus (ZYMV) are spreading quickly, causing significant yield
reductions. Fusarium wilt, powdery mildew, and bacterial wilt also cause considerable damage. “Breeding bitter gourd with resistance or tolerance to diseases is a promising approach,” says Dr. Zhanyong Sun, who is leading AVRDC – The World Vegetable Center’s cucurbit program. Through disease resistance breeding, private sector researchers in the Philippines were able to develop ‘Namamarako,’ a variety
resistant to CNM, a new emerging virus that is a strain of CABYV. This hybrid yields well even during times of high virus incidence. “With 302 accessions listed in its
current inventory, AVRDC’s Momordica collection is of interest for research cooperation with partners in the private sector,” says Dr. Sun. “But it’s important to carry out broader research. We simply don’t know enough about the diseases and insects that affect bitter gourd, the most successful cultural practices, and the most promising pest management strategies.” As Dr. Sun can attest, researching indigenous vegetables is an exploration of the unknown and involves a lot of pioneering work. Together with AVRDC’s Asian Regional Center in Bangkok, Dr.
Sun hopes to conduct an in-depth survey and analysis in the region to identify varieties that are disease resistant and adapted to different agroecological conditions. Researchers will not have to be concerned about one issue: climate
change. Bitter gourd performs even better under hot tropical conditions.



	A blog maintained by Tevita Kete, PGR Officer Secretariat of the Pacific Community (SPC), Suva, Fiji Islands
This weblog documents the activities of Pacific Agricultural Genetic Resources Network (PAPGREN), along with other information on plant genetic resources (PGR) in the Pacific. The myriad varieties found within cultivated plants are fundamental to the present and future productivity of agriculture. PAPGREN, which is coordinated by the Land Resources Division of the Secretariat of the Pacific Community (SPC), helps Pacific countries and territories to conserve their crop genetic diversity sustainably, with technical assistance from the Bioversity International (BI) and support from NZAID and ACIAR. SPC also hosts the Centre of Pacific Crops and Trees (CEPaCT). The CEPaCT maintains regional in vitro collections of crops important to the Pacific and carries out research on tissue culture technology. The CEPaCT Adviser is Dr Mary Taylor (MaryT@spc.int), the CEPaCT Curator is Ms Valerie Tuia (ValerieT@spc.int). PAPGREN coordination and support IPGRI ACIAR NZAID CTA SPC PAPGREN CEPaCT Click on the thumbnail to see a map of the locations of Pacific genebanks. Click here to download a regional directory of genebanks in the Pacific, including information on their location, contact details and holdings. PAPGREN partners Mr William Wigmore Director of Research Ministry of Agriculture Department of Resources & Development P.O. Box 96 Rarotonga Cook Islands Tel: (682) 28711-29720 Fax: (682) 21881 Email: cimoa@oyster.net.ck Mr Adelino S. Lorens Chief Agriculture Pohnpei Office of Economic Affairs P.O. Box 1028 Kolonia Pohnpei 96941 Federated States of Micronesia Tel: (691) 3202400 Fax: (691) 3202127 Email: pniagriculture@mail.fm Dr Lois Englberger Island Food Community of Pohnpei Research Advisor P.O. Box 2299 Kolonia Pohnpei 96941 Federated States of Micronesia Email: nutrition@mail.fm Mr Apisai Ucuboi Director of Research Ministry of Agriculture, Fisheries & Forest Koronivia Research Station P.O. Box 77 Nausori Fiji Islands Tel: (679) 3477044 Fax: (679) 3477546-400262 Email: apisainu@yahoo.com Dr Maurice Wong Service du Developpement Rural B.P. 100 Papeete Tahiti 98713 French Polynesia Tel: (689) 42 81 44 Fax: (689) 42 08 31 Email: maurice.wong@rural.gov.pf Mr Tianeti Beenna Ioane Head, Research Section Division of Agriculture Ministry of Environment, Lands and Agricultural Development P.O. Box 267 Tarawa Kiribati Tel: (686) 28096-28108-28080 Fax: (686) 28121 Email : agriculture@tskl.net.ki; Beenna_ti@yahoo.com Mr Frederick Muller Secretary Ministry of Resources & Development P.O. Box 1727 Majuro 96960 Marshall Islands Tel: (692) 6253206 Fax: (692) 6257471 Email: rndsec@ntamar.net Mr Herman Francisco Director Bureau of Agriculture Ministry of Resources & Development P.O. Box 460 Koror 96940 Palau Tel: (680) 4881517 Fax: (680) 4881725 Email: bnrd@pnccwg.palaunet.com Ms Rosa Kambuou Principal Scientist PGR NARI Dry Lowlands Programme Laloki Agricultural Research Station P.O. 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DIVA-GIS	Monday, May 18, 2009 Posted 12:32 PM by Tevita Bitter gourd: High value, high input From : The World Vegetable Center Newsletter Bitter gourd (Momordica charantia) is regarded as one of the world’s major vegetable crops and has great economic importance. It also is a promising candidate as a remedy that can help millions in the developing world who suffer from metabolic disorders such as type-2 diabetes. These positive features may make bitter gourd look like an all-purpose crop; however, to be successful on a global scale, this indigenous crop requires attention from breeders as well as production system specialists. A traditional vegetable grown throughout tropical and subtropical Asia, bitter gourd is planted on more than 60,000 ha annually—but major insecttransmitted diseases such as Cucurbit aphid-borne yellow virus (CABYC), Papaya ringspot virus (PRSV), and Zucchini yellow mosaic virus (ZYMV) are spreading quickly, causing significant yield reductions. Fusarium wilt, powdery mildew, and bacterial wilt also cause considerable damage. “Breeding bitter gourd with resistance or tolerance to diseases is a promising approach,” says Dr. Zhanyong Sun, who is leading AVRDC – The World Vegetable Center’s cucurbit program. Through disease resistance breeding, private sector researchers in the Philippines were able to develop ‘Namamarako,’ a variety resistant to CNM, a new emerging virus that is a strain of CABYV. This hybrid yields well even during times of high virus incidence. “With 302 accessions listed in its current inventory, AVRDC’s Momordica collection is of interest for research cooperation with partners in the private sector,” says Dr. Sun. “But it’s important to carry out broader research. We simply don’t know enough about the diseases and insects that affect bitter gourd, the most successful cultural practices, and the most promising pest management strategies.” As Dr. Sun can attest, researching indigenous vegetables is an exploration of the unknown and involves a lot of pioneering work. Together with AVRDC’s Asian Regional Center in Bangkok, Dr. Sun hopes to conduct an in-depth survey and analysis in the region to identify varieties that are disease resistant and adapted to different agroecological conditions. Researchers will not have to be concerned about one issue: climate change. Bitter gourd performs even better under hot tropical conditions. * Comments: This comment has been removed by a blog administrator. # posted by Administrator : 8:14 AM Post a Comment	Archive October 2002 November 2002 December 2002 January 2003 February 2003 March 2003 April 2003 May 2003 June 2003 July 2003 August 2003 September 2003 October 2003 November 2003 December 2003 January 2004 February 2004 March 2004 April 2004 May 2004 June 2004 July 2004 August 2004 September 2004 October 2004 November 2004 December 2004 January 2005 February 2005 March 2005 April 2005 May 2005 June 2005 July 2005 August 2005 September 2005 October 2005 November 2005 December 2005 January 2006 February 2006 March 2006 April 2006 May 2006 June 2006 July 2006 August 2006 September 2006 October 2006 November 2006 December 2006 January 2007 February 2007 March 2007 April 2007 May 2007 June 2007 July 2007 August 2007 September 2007 October 2007 November 2007 December 2007 January 2008 February 2008 March 2008 April 2008 May 2008 June 2008 July 2008 August 2008 September 2008 October 2008 November 2008 December 2008 January 2009 February 2009 March 2009 April 2009 May 2009 June 2009 July 2009 August 2009 September 2009 October 2009 November 2009 January 2010 RSS Feed Alternative feed Contact Tevita Something new: Agrobiodiversity Weblog: For discussions of conservation and sustainable use of the genetic resources of crops, livestock and their wild relatives. 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