2021 Research Project List
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Establishing the Technology of New Papaya Viety Breeding for the International Market.

This project is to increase the diversification of the main varieties of papaya for seeds export, and to breed high-yield, large-sized fruit, resistant to storage and transportation, disease resistance, and deep and functional papaya varieties. This year, the large-scale fruit line and the virus-resistant line were crossed with the line bred in the field to separate the purification of the S3 generation. In addition, the characteristics of 10 nutritional lines were selected to select high-quality nutritional lines and shorten the breeding period. In addition, 22 new hybrid generations were observed and excellent new varieties were selected.A total of 29 inbred lines were planted this year, of which 9 large-fruit lines will be used as parents for the future breeding of large-fruit F1, and the other 6 small-fruit lines have higher sugar content and more fruit numbers, which are scheduled to be used as the parents of large-fruit F1. The A62 and A63 lines weigh 1280 and 1455 grams. They are large fruits with a sugar content of 15 to16 Brix. It has a special flavor and is a distinctive line. Observe 22 new hybrid combinations, 6 lines weighed more than 92.4 kg of Tainong II, and the fruit tops of these 6 lines were mostly oval, unlike Tainong II's long pointed tail, which had a sugar content between 12.4 and 12.8 degrees.

t, which exceeds the 92.4 kg of Tainong No. 2. Among these 6 lines The top of the fruit is mostly oval, which is different from the long pointed tail shape of Tainong No.2, but its sugar content is between 12.4 and 12.8 degrees. The nutritional propagation strains A62 and A63 weigh 1280 and 1455 grams, are large fruits, but the sugar content is as high as 15 and 16 Brix, and the flavor is special, which is a characteristic lines.

The fruit yield per plant of the hybrid A37 strain exceeds that of Tainong No. 2 by 92.4 kg, the top of the fruit is oval, and the sugar content is 12.4 to 12.8 Brix.
Fig. 1. The fruit yield per plant of the hybrid A37 strain exceeds that of Tainong No. 2 by 92.4 kg, the top of the fruit is oval, and the sugar content is 12.4 to 12.8 Brix.
Nutritional line A62 has a fruit weight of 1280 grams and a sugar content of 15 Brix, and the flavor is special, which is a characteristic lines.
Fig. 2.Nutritional line A62 has a fruit weight of 1280 grams and a sugar content of 15 Brix, and the flavor is special, which is a characteristic lines.