What is "fertility"

Usage examples of "fertility".

This is the good Gumbo himself starting the new day, May the first, the day of fertility, with a wish that John Barleycorn keeps on rising.

But, having worked the thing out scientifically in his own mind, he saw his way to fortune in a flock of judiciously-crossed Black Spanish and Brahmapootra, stiffened by a strain of the Dorking, with, perhaps, a blend of the Orpington for fertility, and just a suggestion of the Wyandotte, as a precaution against pip.

Fertility keeps talking, my caseworker will have one less client in the morning.

The capital of the Zeirides was named Africa from the country, and Mahadia from the Arabian founder: it is strongly built on a neck of land, but the imperfection of the harbor is not compensated by the fertility of the adjacent plain.

It is probably the survival of an ancient fertility rite and combines, in one ceremony, the features of a number of other seasonal dances and mumming plays.

I am strengthened in this conviction by a remarkable statement repeatedly made by Gartner, namely, that if even the less fertile hybrids be artificially fertilised with hybrid pollen of the same kind, their fertility, notwithstanding the frequent ill effects of manipulation, sometimes decidedly increases, and goes on increasing.

Had hybrids, when fairly treated, gone on decreasing in fertility in each successive generation, as Gartner believes to be the case, the fact would have been notorious to nurserymen.

Pacific Ocean, faunas of Paley, on no organ formed to give pain Pallas, on the fertility of the wild stocks of domestic animals Paraguay, cattle destroyed by flies Parasites Partridge, dirt on feet Parts greatly developed, variable, degrees of utility of Parus major Passiflora Peaches in United States Pear, grafts of Pelargonium, flowers of, sterility of Peloria Pelvis of women Period, glacial Petrels, habits of Phasianus, fertility of hybrids Pheasant, young, wild Pictet, Prof.

Klein-Schul, Pierce recalled that fertility was another inbred Hutterite quality, and one which would have made them candidates for deportation even if they had not resisted recruitment of their Trainable children.

Chapter VIII Hybridism Distinction between the sterility of first crosses and of hybrids -- Sterility various in degree, not universal, affected by close interbreeding, removed by domestication -- Laws governing the sterility of hybrids -- Sterility not a special endowment, but incidental on other differences -- Causes of the sterility of first crosses and of hybrids -- Parallelism between the effects of changed conditions of life and crossing -- Fertility of varieties when crossed and of their mongrel offspring not universal -- Hybrids and mongrels compared independently of their Fertility -- Summary.

Gartner was enabled to rear some hybrids, carefully guarding them from a cross with either pure parent, for six or seven, and in one case for ten generations, yet he asserts positively that their fertility never increased, but generally greatly decreased.

And thus, the strange fact of the increase of fertility in the successive generations of artificially fertilised hybrids may, I believe, be accounted for by close interbreeding having been avoided.

It has been already remarked, that the degree of fertility, both of first crosses and of hybrids, graduates from zero to perfect fertility.

From this extreme degree of sterility we have self-fertilised hybrids producing a greater and greater number of seeds up to perfect fertility.

The fertility, both of first crosses and of hybrids, is more easily affected by unfavourable conditions, than is the fertility of pure species.