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India’s first triple disease resistant tomato F1 hybrid hasfarmers smiling again

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Publish time: 16th March, 2015      Source: March 2015Source: AVRDC newsletter
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India’s first triple disease resistant tomato F1 hybrid hasfarmers smiling againIndia’s first triple disease resistant tomato F1 hybrid hasfarmers smiling again" title="Share this link on Facebook">March 2015Source: AVRDC newsletterArka Rakshak: A high yielding F1 hybrid with disease resistance toTomato leaf curl virus, bacterial wilt, and early blight. Plants aresemi-determinate with dark green foliage. Fruits are oblong withlight green shoulders, medium to large size (80-100 g), deep red,very firm with good keeping quality (15-20 days) and longtransportability. Bred for both fresh market and processing. Yield:90-100 t/ha in 140-150 days.？？Tomato (Solanum lycopersicum L.)is the second most importantvegetable crop in India after potato.It is cultivated over an area of 0.89million hectares with production of18.23 million metric tonnes.Average productivity is about 20.7tonnes per hectare. Andra Pradesh,Odissa, Madhya Pradesh,Karnataka, West Bengal,Maharashtra, Chhatishgarh andGujarat are the country’s majortomato-growing states.In recent years, the occurrence ofmajor diseases such as Tomato leafcurl virus (ToLCV), bacterial wilt(BW) and early blight (EB) hasbecome very serious, causingconsiderable yield loss for tomatoproducers. Yield loss due to ToLCVhas been reported up to 70-100%depending on the stage of attack,and bacterial wilt can cause yieldloss up to 70%. Early blightdamages foliage and fruit, causingyield loss up to 50-60%. Nochemicals provide effective controlof these serious diseases.Mr. Babu, a progressive tomato growerfrom Karnataka, has exported ‘ArkaRakshak’ to Dhaka, Bangladesh and PortBlair, Andaman and Nicobar.？？Concentric rings: symptoms of early blight on leaves and fruitAdoption of multiple diseaseresistant tomato varieties is themost practical and cost-effectiveway for growers to manage thethree pathogens. Research carriedout for several years at the IndianInstitute of HorticulturalResearch (IIHR), Bangalore hasproduced a high yielding F1 hybridnamed ‘Arka Rakshak’ with tripledisease resistance to ToLCV, BW,and EB. ‘Arka Rakshak’ is a crossbetween advanced breeding line(TLBER-12-21-43-1) bred at IIHRand breeding line CLN-2498Ddeveloped at AVRDC – The WorldVegetable Center, Taiwan.Breeders, virologists,bacteriologists, pathologists andmolecular biologists joined in aninterdisciplinary effort to breed thehybrid. Further work is underwayto introgress late blight resistancegenes in ‘Arka Rakshak’ to make iteven more valuable to farmers inIndia; the new hybrid has alsosparked demand for seed inPakistan, Mauritius, Vietnam, andcountries in Africa.More news from: AVRDC - The World Vegetable Center Website: http://www.cnchemicals.com/: March 16, 2015The news item on this page is copyright by the organization where it originatedFair use notice