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  • Author or Editor: I. Baron x
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Abstract

In a breeding program for table grapes (Vitis vinifera L.) initiated in 1968 at Bet Dagan, Israel, one objective has been to breed large-berried, better-flavored grape cultivars for replacement of ‘Ribier’ (syn. Alphonse Lavallee). A selection with large black berries has been made and named ‘Nava’ (Fig. 1.). The fruit is well-adapted for the fresh market.

Open Access

Abstract

A major objective of the grape-breeding program, started in 1968 at Bet Dagan, has been to breed early-ripening and late-ripening table grapes with loose clusters, and good berry size, appearance and quality. Only crosses between Vitis vinifera cultivars have been made. The progeny of a local ‘Dabouki’ × ‘Cardinal’ cross have proven of particular interest and one selection is being named ‘Shani’.

Open Access

Abstract

In a breeding program for table grapes (Vitis vinifera L.) initiated in 1968 at Bet Dagan, one of the objectives has been to breed late-ripening cultivars. A late-ripening selection from a cross between ‘Dabouki’ and ‘Cal-meria’ has been made and is being named ‘Elul’.

Open Access

Abstract

In a breeding program for table grapes initiated in 1968 at Bet Dagan, one of the objectives has been to breed late-ripening cultivars of Vitis vinifera. A late-ripening plant selected from a cross of ‘Zeni’ and ‘Toufahi’, made in 1969, is being named ‘Odem’.

Open Access

Abstract

In a table grape-breeding program initiated in 1968 at Bet Dagan, the progeny of a cross between the local cultivar ‘Dabouki’ and ‘Cardinal’, has proven of special interest and several selections have been made. One selection is being named ‘Sivan’.

Open Access

Abstract

Treatment with a 0.5-2% cyanamide (H2NCN) solution for 5 min effectively substituted for chilling in seed of four Vitis vinifera L. cultivars, allowing immediate germination. Treatment could shorten the breeding cycle.

Open Access

Immature grape embryos from early ripening genotypes of Vitis vinifera were successfully cultured in vitro on Difco orchid agar or a modified White's agar medium. Germination was increased in vitro for five genotypes from 0%, 7%, 11%, 12%, and 16% in vivo to 15%, 24%, 23%, 34%, and 24%, respectively. Subculturing embryos onto liquid culture from seeds that failed to germinate on agar also was possible. Differences in germination rates, as affected by pollen, were significant. This method will allow accelerated development of early ripening cultivars by allowing breeders to use such genotypes as females, as well as males.

Free access