08-30-2010, 04:36 AM
You might have a pollination problem...
"Pollination Requirements:
The flowers of passionfruit are self-sterile, and some plants are even self-incompatible (Akamine and Girolami 1957). Care must be taken, therefore, in the selection and distribution of compatible clones or cultivars in the field to insure maximum fruit production (Gilmartin 1958). The amount of pollen deposited on the stigma determines the number of seeds set and size of the fruit. The ovule must be pollinated and the seeds developed if juice is to form in the aril (pulp sac) (Knight and Winters 1962, 1963). A fruit can develop as many as 350 seeds. Unless about 100 ovules develop into seeds, the fruit is likely to be "hollow" (light in weight and with little juice). Few fruit develop with fewer than 50 seeds. There is no parthenocarpic set of fruit.
Akamine and Girolami (1959) found that fruit set, numbers of seed, fruit weight, and juice yield correlated with numbers of pollen grains deposited upon the stigma. They concluded that the maximum effect of pollination was not attained with their largest number (1,776) of pollen grains deposited on a stigma. This shows the importance of adequate bee visitation and pollen transfer between flowers within the brief span of time of stigma receptivity for maximum set of fruit."
Here is the whitepaper I found. I stopped searching after I found this. So have not verified with other sources.
http://beeculture.com/content/pollinatio...fruit.html
Susan
"Pollination Requirements:
The flowers of passionfruit are self-sterile, and some plants are even self-incompatible (Akamine and Girolami 1957). Care must be taken, therefore, in the selection and distribution of compatible clones or cultivars in the field to insure maximum fruit production (Gilmartin 1958). The amount of pollen deposited on the stigma determines the number of seeds set and size of the fruit. The ovule must be pollinated and the seeds developed if juice is to form in the aril (pulp sac) (Knight and Winters 1962, 1963). A fruit can develop as many as 350 seeds. Unless about 100 ovules develop into seeds, the fruit is likely to be "hollow" (light in weight and with little juice). Few fruit develop with fewer than 50 seeds. There is no parthenocarpic set of fruit.
Akamine and Girolami (1959) found that fruit set, numbers of seed, fruit weight, and juice yield correlated with numbers of pollen grains deposited upon the stigma. They concluded that the maximum effect of pollination was not attained with their largest number (1,776) of pollen grains deposited on a stigma. This shows the importance of adequate bee visitation and pollen transfer between flowers within the brief span of time of stigma receptivity for maximum set of fruit."
Here is the whitepaper I found. I stopped searching after I found this. So have not verified with other sources.
http://beeculture.com/content/pollinatio...fruit.html
Susan
Susan