Genetic, Phenotypic and Environmental Correlations Among 28 Fruit and Plant Characters in the Cultivated Strawberry

Abstract

Genetic, p!motypic and environmental correlations and coheritabilides berween ZR fru~t and plant characters were estimated in 64 progenia produced among 31. North American strawberry clones and 1 German one under the crossing scheme similar to North Carafina Desip 11. Total berry and total marketable yields were positively and significantly correlated with average berry weighr, hrries per flower stalk, yield per flower stalk, leaf area, and petiole diameter, but negativcly correlated wirh stolon number and flower stalk number. The invcrsc relationsIlips bctween flower stdk number with average berry weighr, and with berries pcr flower stalk may be genetically dependent or arise from dmIoprnentally induced relacionships. Plant height appeared to be a goad indicator of both early and early marketable yields; petiole number tvas considcrcd the bcsr indicaror of solubIe solids and easy capping, while soluble solids may be of value as an indicator of both late and late marketable yields. In general, no genetic barrier was detected to combine high yield with good quality of the berry.

Reconstructing Fragaria × ananassa utilizing wild F. virginiana and F. chiloensis: inheritance of winter injury, photoperiod sensitivity, fruit size, female fertility and disease resistance in hybrid progenies

“…Estimations were considered as 0 when they were negative. Correlations were calculated based on full-sib family means to examine interactions between the various yield components (Bedard et al 1971;Lacey 1973). Half-sib family means were estimated based on the means of full-sib families and a standard error of these means is presented based on the pooled deviations of full-sib family means.…”

Cultivar Variation in Yield Components of Strawberries

“…Several population and growth character istics may influence strawberry yield, in cluding density, yield/plant, fruit number/ plant, fruit size, crowns/plant, and peduncles/plant (4,7,10,11,12). These have been shown to be under both genetic (1,8) and environmental controls (2,3,4,13).…”