Improvement on Production and Pollination technique of jelly-fig
|Keywords:||2000年豆類、茶及新興作物育種及生產技術改進研討會;Proceeding of the Symposium on the Improvement of Breeding and Production Techniques of Legumes, Tea and New Special Crops 2000||Issue Date:||Nov-2000||Publisher:||台中：農業試驗所||Start page/Pages:||277-278||Source:||2000年豆類、茶及新興作物育種及生產技術改進研討會:||Abstract:||
Under the weather condition in the central plain of Taiwan, the results of examining the fruit setting and pollination of the 3-year jelly-fig plants grown in an experiment field show that 15 strains of the 32 male strains have good fruit setting. The annual fruit setting starts between March and April followed by the 2nd crop between July and August and the 3rd crop on October. The crop seasons of female strains are similar to the males. Among 156 females strains, the development and fruit setting situation of 30 strains are apt for economic traits. These 30 strains continuously set fruit during the experiment period. The number of fruit per plant differs among strains but peaks in the 2nd crop on both sex plants, and is 21 on males and 26 on females based on the 3 counts in 21 days. The duration for young fruit to develop to ready for pollination is different among strains and ranges from 18 to 26 days. Duration of suitable pollination is 5-7 days. Un-pollinated fruit wilts and sheds. The overwintering population of jelly-fig wasp is not low, thus the pollination of the 1st and the 2nd crop seasons has to depend on wasp introduction. Mature adult wasps leave male fruit in 2-4 days. Long and dense stagminates hinder the wasp from moving though the opening on the fruit end. The 3rd crop season is important on retaining the overwintering wasp population in field that serves a pollination resource for the spring crop. Up to date, eleven male strains have successful natural pollination indicating the field pollination ecology has been primarily established.
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