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
Mr William Wigmore
Mr Adelino S. Lorens
Dr Lois Englberger
Mr Apisai Ucuboi
Dr Maurice Wong
Mr Tianeti Beenna Ioane
Mr Frederick Muller
Mr Herman Francisco
Ms Rosa Kambuou
Ms Laisene Samuelu
Mr Jimi Saelea
Mr Tony Jansen
Mr Finao Pole
Mr Frazer Bule Lehi
Interested in GIS?
Tuesday, October 03, 2006
Posted 4:46 PM by Luigi
New genetic resources from the SPC-RGC
From Dr Mary Taylor, Regional Germplasm Centre Adviser (MaryT@spc.int).
We have 6 new varieties of cassava ( Me 02, Me 03, Me 05, Me 06, Me 08 and Me 29) from CIAT, the International Agricultural Research Centre with the mandate for cassava. These varieties were tested for Cassava Common Mosaic Virus (CCMV), Frogskin disease (FSD) and Cassava X virus CsXV at CIAT. We also screened these varieties ourselves for virus symptoms at 3 and 6 months. These varieties have only been evaluated in S. America where Me 02, Me 03, Me 05, Me 06, Me 08 have shown combined resistance to different stresses, with some having low tolerance to white fly. Me 29 has shown resistance to root rot, bacterial blight, and acid soils.
We have imported 4 varieties of Dioscorea rotundata from IITA in Nigeria. These were imported mainly for their resistance to anthracnose disease. They were tested for Yam mosaic virus (YMV), Dioscorea alata virus (DAV), Dioscorea dumetorum virus (DDV), Dioscorea alata virus (DaV), Cucumber mosaic virus (CMV), Dioscorea mottle virus (DMoV) at IITA in Nigeria. We also tested for Dioscorea bacilliform virus (DBV), and re-tested for Dioscorea alata virus (DAV) and Yam mosaic virus (YMV) using highly sensitive polymerase chain reaction (PCR). They have only been evaluated in Nigeria where they were found to be adapted to the lowland forest and moist savanna agroecozones. All except, DR/AF 28 mature in 8 months. DR/AF 28 requires 6-7 months to mature.
JAPANESE TARO (COLOCASIA ESCULENTA VAR. ANTIQUORUM)
We have three varieties of japanese taro that have been indexed for the five known taro viruses. These produce small cormels which have a taste more resembling the Irish potato than the Pacific taro. They could be a very good "product" for sale to tourist hotels and restaurants, and if your country has a significant "ex-pat" population. To my knowledge only Tonga has experience in cultivating/producing this type of taro.
TANSAO (ASIAN) TARO
As you know we have been distributing taro from S.E Asia (TANSAO) collection but it is early days yet to get any feedback on evaluation. However, some of these varieties went first to Tolo Iosefa, the coordinator of the Taro Improvement Programme (TIP) in Samoa and so we do have some results from Samoa which I thought you might like to know about.
Tolo's preliminary observations and selection were:
The following cultivars were selected for on-farm evaluation: TAN/MAL-12 & MAL-14; IND-14 & IND-13 and THA-09, mainly selected because of their very good eating quality. Of these cultivars, TAN/IND-13 showed very good growth and out-competed all the others. TAN/MAL-12 was also growing very well. IND-14 appeared to be very susceptible to Dasheen Mosaic Virus (DsMV).
If you would like to try these or any of the other Asian taro varieties, please get in touch with either Valerie or myself.
If you are interested in any of these varieties or require more information, then please do not hesitate to get in touch with either myself or Valerie (email@example.com).
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