Results 261 to 270 of about 680,154 (292)

Breeding strategies and breeding plans

1994
Abstract The tree breeder’s work program to achieve a supply of genetically improved planting stock consists of many activities, most of them seasonal: collecting seed, running a nursery, making grafts and cuttings, planting and measuring progeny tests, statistical analysis, interpreting results, preparing budgets and plans for future ...
Ken Eldridge, John Davidson, Chris Harwood, Gerrit Van Wyk   +3 more
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Breeding Methods and Breeding Research

2002
In a broad sense, the term “ornamental plants” covers all kinds of plants used for one ornamental purpose or another in homes, gardens and parks. Ornamental plant breeding, therefore, covers the breeding of all ornamental plants in the broad sense. On the other hand, floriculture includes mostly herbaceous ornamental plant species, i.e., bedding plants,
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II. Breeds and breeding practices

New Zealand Journal of Experimental Agriculture, 1979
Abstract A national questionnaire of farms with pigs, carried out in April 1977, was used as a source of data on the extent of use of purebred v. homebred stock in commercial herds, the fate and average age of performance-tested boars, the extent of crossbreeding, and the identity of breeds and crossbred types of stock.
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Breeding (2): Ecology of Breeding

1996
Once breeding activity has been initiated under the influence of the various environmental stimuli described in the previous chapter, courtship, nestbuilding (where relevant) and subsequent parental behaviour follow in sequence. These activities may involve finding appropriate nesting materials (for example, green grass in the case of weavers Ploceus ...
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Rice: Breeding

2004
Qingyao Shu, Dianxing Wu
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Maize: Breeding

2004
E.A. Lee, L.W. Kannenberg
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Breeding (1): Timing of Breeding

1996
With regard to the timing of breeding in birds, “by far the most important ultimate factor for nearly all species of birds is the availability of an adequate food supply…. Each species has therefore evolved the timing of its breeding so that it coincides with a maximum availability of its species-specific food” (Immelmann 1971).
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Lupin Breeding

2004
L.C. Trugo, E. von Baer, D. von Baer
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Breeds and breeding

Journal of Equine Veterinary Science, 1984
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Breeds and Half-Breeds

Ethnohistory, 1972
Michael J. Brodhead, Gordon Speck
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