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  • Author or Editor: Chen Shifriss x
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Abstract

In pepper (Capsicum annuum L.), independent assortment was found between the genes within the following three pairs: male sterility (ms) and erect fruit position (up), ms and anthocyaninless (al), and up and al. The genetic system controlling pointed vs. inverted apex was hypothesized to segregate independently of al, ms, and up. The genes controlling premature fruit pigmentation segregate independently of al and up. Close linkage exists between round leaf (rl) and al+ . Partial linkage is suggested between Ms 1 and pointed (pt) and the genes controlling premature cream color, but independent segregation was found with the genes controlling deep green color. The expected brown phenotype was not realized in homozygous cl (brown fruit color) in the presence of cream and similar pigment genes; their fruit contained an insufficient amount of chlorophyll. Morphological and physiological traits may serve as marker traits in improving the production of hybrid seeds, particularly when recessive traits are bred into seed parent lines.

Open Access

Abstract

Environmental parthenocarpy leading to seedless fruits is a well-known phenomenon in pepper, particularly when the crop is exposed to low temperatures before and during anthesis. The resulting fruits show large variation in fruit deformation and are of low marketable value. Genetic parthenocarpy controlling even shape may be useful for fruits for both home use and industrial processing. However, parthenocarpic pepper cultivars are an attractive goal that is still far from realization. From greenhouse pot experiments (2) carried out over 3 years with ‘California Wonder’, fruit weights of up to 150 g were obtained with a high correlation between seed number and fruit weight. Linear regression from this study demonstrated that parthenocarpic fruit of ‘California Wonder’ weigh 60–70 g, about half that of the largest-seeded fruit. Fruit of greenhouse plants weigh about half that of field-grown fruit. It is expected that the parthenocarpic fruits in the field will weigh more than 60–70 g. Moreover, in cultivars with “giant” fruits, in which the realization of large fruit weight depends on the genetic potential for weight and seed number, the parthenocarpic fruits are expected to be heavier than in the parthenocarpic Belltype cultivars.

Open Access

Abstract

A stable, male-sterile, recessive mutant designated ms-2 has been isolated from ‘California Wonder’ pepper and appears useful for hybrid production of Bell pepper types.

Open Access
Authors: and

Abstract

Several cytoplasmic-genic male-sterile (partially fertile) cultivars were developed in pepper. Three cultivars demonstrated different levels of male sterility; male sterility stability of ‘Bikura’ was reliable for hybrid seed production.

Open Access

Abstract

Genetic male sterility was found in the Bell type pepper variety ‘All Big’. Breeding experiments suggest that the character is controlled by a single recessive gene in Bell type pepper varieties. This new source of male sterility appears to be superior to sources formerly reported by being highly stable and already present with a Bell type genetic background, and by the absence of undesirable pleiotropic effects. The usefulness of the character for hybrid seed production is discussed.

Open Access