Results 251 to 260 of about 47,915 (281)

The Evolution of Self‐Fertilization in Perennials

The American Naturalist, 1997
Many plants are perennials, but studies of self-fertilization do not usually include features of perennial life histories. We therefore develop models that include selfing, a simple form of perenniality, adult inbreeding depression, and an adult survivorship cost to seed production. Our analysis shows that inbreeding depression in adults diminishes the
Morgan, M.T., Schoen, D.J., Bataillon, T.M.   +2 more
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Selection within Self-Fertilizing Populations

Biometrics, 1978
A theoretical formulation of continuing selection in finite populations due to Hill (1969) is used to study the e.ects on the frequencies of the various genotypes of selecting the best individual plant according to the values of a single quantitative trait in a population that reproduces entirely by selfing. As an example of the use of the method, some
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Breeding for Self-Fertility

1984
Advantages and disadvantages of self-fertile cultivars are discussed, and a method to avoid the complete loss of heterosis is suggested. Nine components of self-fertility related with the processes of pod and seed production were analysed from a genetic point of view.
J. I. Cubero, M. T. Moreno
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SELF-FERTILITY IN THE SCLEROTINIACEAE

Canadian Journal of Botany, 1961
Nine species representing five genera of the Sclerotiniaceae were found to be self-fertile. These are as follows: Ciboria acericola sp. nov., C. acerina Whetz. & Buchw., C. amentacea (Balb. ex Fr.) Fckl., C. betulicola sp. nov., C. caucus (Rebent. ex Fr.) Fckl., Ciborinia erythronii (Whetz.) Whetz., Rutstroemia paludosa (Cash & Davidson) comb ...
J. Walton Groves, Mary E. Elliott
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Preventing Self-fertilization

2007
AbstractPerfect (hermaphrodite) flowers can, assuming no other constraints, self-pollinate, and fertilize their own ovules. This guaranteed sexual reproduction gives self-pollinating plants the ability to colonize new habitats, and it is a common trait in weedy species.
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Cryptic Self-Fertilization in the Malpighiaceae

Science, 1980
Some Malpighiaceae produce minute cleistogamous flowers in addition to showy chasmogamous flowers. Standard techniques fail to reveal how the cleistogamous flowers achieve self-fertilization. Fluorescence in longitudinal sections shows that the pollen germinates inside the indehiscent anther.
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Observations on self-fertile clones of kiwifruit

New Zealand Journal of Crop and Horticultural Science, 1991
Abstract Two self-fertile clones of Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson from a kiwifruit orchard near Naples, Italy, were studied in the open field and in the laboratory during 1986–89. Data on flowers show that the androecium and gynoecium were both normally developed, and viable pollen was produced in appreciable amounts ...
BELLINI E, PILONE, NICOLA, ROTUNDO A.
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Evolution of Self-Fertile Hermaphrodites

2011
Self-fertile hermaphrodites have evolved in several independent lineages of nematodes. Surprisingly, both C. elegans and C. briggsae have recruited members of the large family of F-box genes to promote hermaphrodite development. However, C. elegans FOG-2 and C. briggsae SHE-1 have different biochemical functions, and each was created by a unique series
Ronald E. Ellis, Yiqing Guo
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SELF-FERTILITY IN BOTRYOTINIA PORRI

Canadian Journal of Botany, 1964
Apothecia were produced in culture from mass conidial isolates of Botrylis porri (v. Beyma) Buchw. From these apothecia single ascospore cultures were obtained which produced apothecia in unspermatized dishes. It is concluded that Botryotinia porri is self-fertile.
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