Showing papers on "Molecular breeding published in 1992"

Reproductive Biology and Plant Breeding

Abstract: A new hybrid system based on genetically engineered genes for fertility control has been developed. Male sterility was engineered by targeting expression of chimaeric ribonuclease genes to immature anthers of transgenic plants. Ribonuclease expression destroyed the tapetal cell layer, prevented pollen formation and lead to male sterility. Male sterility was restored in progeny of crosses between male sterile plants and plants expressing a chimaeric tapetum specific ribonuclease inhibitor gene. Fertility restoration is the consequence of the suppression of cytotoxic ribonuclease activity by the formation of RNaseIRNase inhibitor complexes. Fertility restored anthers have a normal tapetum, and produce normal amounts of functional pollen. The hybrid system has been successfully introduced in oilseed rape, cauliflower, chicory, lettuce, tomato, cotton and corn.

Signal processing algorithms using Fortran and C

Abstract: "Molecular Breeding" is an international journal publishing papers on all aspects of research focused on applications of plant molecular biology - that is, research with results most likely leading to practical applications. The practical applications might relate to the developing world as well as to the Western world and have demonstrable benefits for the seed industry, farmers, the processing industry, the environment and the consumer. All papers contribute to the understanding and progress of modern plant breeding, encompassing the scientific disciplines of biochemistry, genetics, physiology, pathology, plant breeding and ecology, among others. Special emphasis is given to the molecular and cellular approaches to these disciplines.

Cytogenetics in Genetics and Plant Breeding

Abstract: In most of its stages, plant breeding makes use of auxiliary scientific disciplines. One of these disciplines. One of these disciplines is genetics, with its subdisciplines quantitative genetics, population genetics, cytogenetics, molecular genetics, etc. To understand the role of cytogenetics in plant breeding, it is useful to first give a brief review of the segment of genetics it covers, and what it is considered to include.

Introduction of Exogenous DNA into Plants after Pollination via the Pollen Tube Pathway

Abstract: The technique of introducing exogenous DNA into plant after pollination has been used successfully on cotton and rice during last thriteen years by five institutes in China. New varieties of agricultural improvement on diseases resistances and other better traits have been obtained [1–6]. with total donor DNA transfer. The technique was confirmed to be useful for breeding by a Specialists Committee which was organized by Chinese Academy of Scienses and Ministry of Agriculture, Animal husbandry and Fishery in 1986. .A workshop (1986) and a Symposium (1988) of Molecurlar Breeding were held. Since then, there are sixteen provinces including cities with twenty five laboratonies starting to apply this technique on wheat,soya bean, corn, forage, vegetables. as well as cotton, rice and etc. All produced transformed offsprings, some of which had disease resistance, quality or yield improvement.