Breeding programmes

Introduction improvement of drought resistance in conventional breeding programmes... 

An efficient breeding programme for drought resistance is difficult to achieve by using the sole criterion of yield performance under stress, so... 

Fig. 1. A general, simplified and self-explanatory layout of the wheat breeding programme at the Volcani Center, Israel. The selection for drought resistance is affected at about the F4 and later generations, by using infra-red thermometry, chemical desiccation and yield under stress. A summer (off-season) nursery is incorporated as means for selection for heat tolerance.

Finlay, K.C. Wilkinson, G.N. (1%3). The analysis of adaptation in plant breeding programme. Australian Journal of Agricultural Research, 14, 742-61. 

Sweet potato 10-22600 Inclnded because of breeding programmes to increase (3-carotene ... 

The discussion group agreed that poultry breeds and breeding programmes for organic farming should have the following characteristics (Hirt et al., 2001) ... 

Sprensen (2001) proposes two strategies that should be initiated as soon as possible (i) a continuous search for breeds or lines that are suitable for organic egg production and (ii) starting a breeding programme for laying hens that takes into consideration the specific requirements of organic egg... 

Physical isolation is a traditional means of limiting PMGF in crop breeding programmes and it can be exploited as an aid to help limit transgene escape... 

Anderson, J. A. D., Howard, H. W. (1981). Effectiveness of selection in the early stages of breeding programmes. Potato Research, 24,289-299. 

Brown, J. C., Caligari, P. D. S., Mackay, G. R., Swan, G. E. L. (1987). The effieieney of visual seleetion in early generation of a potato breeding programme. Annual Applied Biology, 110, 357-363. 

Gopal, J. (1998). Identification of superior parents and crosses in potato breeding programmes. Theoretical and Applied Genetics, 96,287-293. 

Gopal, J., Gaur, P. C., Rana, M. S. (1992). Early generation selection for agronomic characters in a potato breeding programme. Theoretical and Applied Genetics, 84, 709-713. 

There are only a few studies on the correlation between the expression of specific transcripts and freezing tolerance (see earlier), but nucleotide probes for these genes may contribute to selection schemes in breeding programmes. 

Progestogens, such as progesterone, and oestrogens have also been used in animal husbandry for herd or flock management to synchronise animals coming into season , so that breeding programmes can be planned, and to induce milk production. 

Researchers have demonstrated that some undesirable behavioural traits related to an animal s ability to adapt to its environment have a genetic component. Thus, an assessment of fear, dominance ability and social behavioural traits should be introduced into a breeding programme in order to... 

The development of crops with modified fatty-acid profiles, developed through conventional breeding programmes, for example high erucic acid crops, also pose a risk to food crop chains. As such there is a requirement to ensure there is little or no risk of cross-fertilisation and intermixing with conventional cultivars, and to ensure identity preservation and separation of crop produce. Such systems have been running effectively for decades. 

Longer term Development of organic VCU-testing protocols conventional plant breeding programmes including low-input selection criteria Varieties bred for low-input conditions and organically produced seeds... 

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