Wyniki wyszukiwania

1

Root penetration of artificially compacted hard layers

100%

Busscher W. J., Lipiec J., Bauer P. J., Carter T. E.

Bibliotheca Fragmenta Agronomica

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1997

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tom 2A

2

Biotechnology development in cotton fiber: strategies, applications, and socio-economic impact

84%

Sawahel W.

Cellular and Molecular Biology Letters

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1997

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tom 02

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nr 3

Classical breeding provides the means for transferring genes among compatible cotton cultivars, and thereby narrows the number of fibers traits that can be enhanced. On the other hand, recombinant DNA technology provides ways to transfer genes from any living organism into cotton, and therefore opens the door for improving existing fiber quality as well as producing fibers with new and novel properties. As new generations of cotton fibers are developed through genetic engineering, they will impact on the textile industry which is a significant segment of economies of many countries. This article focuses on the recent advances in cotton fiber biotechnology and its impact. The genetic strategies for producing speciality fibers, such as wrinkle-free polyster fibers, coloured fibers and fibers with immobilized enzymes, are examined. In addition, an outline about fiber modification genes, such as hormone and cellulose genes, is provided. Finally, the socio-economic impact of such development on the cotton industry in developing countries is discussed.

3

Xenia effect on seed and embryo size in cotton [Gossypium hirsutum L.]

67%

Pahlavani M. H., Abolhasani K.

Journal of Applied Genetics

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2006

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tom 47

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nr 4

The term xenia was coined to describe the effect of foreign pollen on the development and characters of the seed. To study its importance and consequences for various seed traits in cotton (Gossypium hirsutum L.), the effect of pollen genotype on seed and embryo weight was studied with seeds from 15 F₁ hybrids. Cross-fertilization changed seed weight by up to 7.0% in relation to self-fertilization. Xenia effect significantly increased embryo weight of cross-fertilized seeds, by up to 14.4% in comparison to self-fertilized seeds. Seeds of some crosses had a lower hull content than corresponding selfed seeds. On average, the xenia effect was greater for embryo weight than for seed weight. However, in some crosses there was no difference between cross- and self-fertilized seeds for seed weight, embryo weight, moisture content and hull content. Positive xenia effects for seed weight and embryo weight may help us to establish uniform stands of vigorous hybrid seedlings, especially under unfavourable conditions. Also, larger seed and embryo weight, along with lower hull content, could result in higher oil yield. Therefore, careful choosing of genotypes as parents and of cross direction in the production of hybrid seed is very important in cotton.

Ograniczanie wyników

1 Bibliotheca Fragmenta Agronomica

1 Cellular and Molecular Biology Letters

1 Journal of Applied Genetics

1 Abolhasani K.

1 Bauer P. J.

1 Busscher W. J.

1 Carter T. E.

1 Lipiec J.

1 Pahlavani M. H.

1 Sawahel W.

1 2006

2 1997

Root penetration of artificially compacted hard layers

Biotechnology development in cotton fiber: strategies, applications, and socio-economic impact

Xenia effect on seed and embryo size in cotton [Gossypium hirsutum L.]