Accurate estimates of yield and yield components for parental selection would facilitate cranberry breeding efforts. A study was designed to obtain value estimates for traits related to yield. Ten commonly-cultivated varieties grown in a replicated planting, were evaluated in 1991 and 1992 for fruit yield per unit area (FY), average berry weight (BW) and number of berries per unit area, or berry concentration (BC). Averaged over all varieties, FY was significantly greater in 1992. BC was responsible for higher yields in 1992. Regression analysis revealed that BC accounted for more of the variation in FY than did BW in both years. BW accounted for some variation, however, in 1991 when FY was lower. Varieties differed significantly in FY, BW and BC. Hybrid varieties bad significantly greater FY and BW than wild selections. Variation for yield components exists among varieties tested, suggesting genetic gain is possible for yield with additional breeding efforts. In particular, greater fruit set should be emphasized as a breeding objective.
which the amount of irrigation applied was based on daily reference evapotranspiration data (ETo) obtained by the California Irrigation Management System (CIMIS). They found increasing yield and tree growth with increasing amounts of applied water
agent of bacterial wilt of cucurbits. Bacterial wilt can reduce yields by 80% on unprotected muskmelon ( Sherf and MacNab, 1986 ) and cucumber [ Cucumis sativus ( Latin, 1993 )] and is also a serious threat to pumpkin ( Cucurbita maxima ), winter squash
Flower and fruit abortion is a yield-limiting factor in many crops ( Bacci et al., 2006 ; Goldschmidt, 1999 ; Halbrecq et al., 2005 ). Abortion can be caused by unfavorable conditions such as temperature stress ( Guilioni et al., 1997 ), low
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. Fungicides were applied routinely according to University of Georgia recommendations ( Ellis et al., 2000 ), and insecticides were applied only when an insect buildup occurred. Each tree was harvested yearly for total nut yield, and a random 50-nut sample was
rate than those that were the product of outcrossing. Although the selective retention of fruit that were the product of outcrossing was highly significant and well documented, significant relationships between outcrossing rates and yields were only
entered the market as edible oil, its seed yield is very low under the current planting pattern. Consequently, high-yield and high-quality large-scale planting of P. ostii has not yet occurred. Seed yield traits, oil yield, and fatty acid compositions
( Darnell et al., 2006 ; Knight et al., 1996 ). In this annual system, raspberry plants are removed after harvest and are replaced with new prechilled long-canes for the next season. Previous work has shown that yields in this annual system are less than
increased yields and profitability compared with the performance of plants grown outdoors. Greater production was usually associated with earlier cropping, and protection from frosts and rain. There was generally less grey mold in the fruit grown under