High Pollen Loads Can Cause Pistillate Flower Abscission in Walnut
نویسندگان
چکیده
منابع مشابه
Pistillate Flower Abscission - 1990
Evaluation of the pistillate flower abscission (PFA) potential of UC-67-13 and UC-67-11 was continued at two sites. At a high PFA site UC-67-13 PFA was only moderately lower than Serr for the third year. UC-67-11 demonstrated low PFA potential for a seconq year at this site. Higher PFA potential of UC-67-13 than UC-67 -11 was also found at a second site for a second year. No further evaluation ...
متن کاملPistillate Flower Abscission (pfa)
PFA was not different with shaded vs. exposed limbs of the same trees nor between shaded interior trees and outside ones with high light exposure. Tehama trees expressed lower PFA than adjacent Serre PFA of Tehama was also low at a site where Serr trees (removed 1982) had very high drop the previous three years. Fruitfulness of all monitored limbs in 1982 ranged from 6 to 97% and the earlier co...
متن کاملWalnut Pollination and Pistillate Flower Abortion
This year’s research focused on further evaluation of potential alternate bearing with multiple year ReTainTM treatments. After three years of treatment with ReTainTM, there does not appear to be any negative effect on yield. There was a lower reduction in PFA than was expected, but this is thought to be unrelated to multiple year treatments. Treatment of a Chandler orchard with ReTainTM was do...
متن کاملPollen and Pistillate Flowerabscission
The objective of this year's work was to confirm the role of pollen in pistillate flower abscission (PFA) of Serr walnut. Pistillate flower abscission was evaluated in individual trees along transects, beginning close to po11enizers and extending up to 640 feet away, in 12 orchards. It was also evaluated in controlled pollinations of bagged and unbagged Serr flowers with varying levels of Serr ...
متن کاملEffect of Retain on Reducing Pistillate Flower Abortion in Serr Walnut
Retain, a commercially available ethylene inhibitor developed by Valent BioSciences, has been widely tested on stone fruit for improving post harvest shelf life. This season, a simple test of its effect on Serr PFA was conducted in Kings County. A nine-year old block of Serr walnuts south of a Chandler orchard was selected. Ten fruiting shoots in each of twenty trees 120 to 150 feet south of th...
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ژورنال
عنوان ژورنال: Journal of the American Society for Horticultural Science
سال: 1994
ISSN: 0003-1062,2327-9788
DOI: 10.21273/jashs.119.3.505