Development and evaluation of India's first intraspecific cotton recombinant inbred mapping population for extra-long staple fibre traits.

Fibre quality improvement in is one of the long thought objectives for sustainability of cotton improvement. The efforts to transfer alleles in to for enhanced fibre quality is still under process across the world. To meet the future fibre quality demand in India, here we report development of recombinant inbred mapping population that has huge potential for precise mapping of extra-long staple traits.

Potent insect gut binding lectin from Sclerotium rolfsii impart resistance to sucking and chewing type insects in cotton.

Cotton is an important crop that is continuously cultivated around the world. However, its production has decreased in recent times due to wide ranging insects and also current practices of using synthetic insecticides that are not precise and their residues impairing the biodiversity. Hence, the search for newer classes of efficient entomotoxic proteins continues.

Transcript profiling of genes expressed during fibre development in diploid cotton (Gossypium arboreum L.).

Background: Cotton fibre is a single cell and it is one of the best platforms for unraveling the genes express during various stages of fibre development. There are reports devoted to comparative transcriptome study on fiber cell initiation and elongation in tetraploid cultivated cotton. However, in the present investigation, comparative transcriptome study was made in diploid cultivated cotton using isogenic fuzzy-lintless (Fl) and normal fuzzy linted (FL) lines belong to Gossypium arboreum, diploid species at two stages, 0 and 10 dpa (days post anthesis), using Affymetrix cotton GeneChip genome array.

Biochemical and molecular dissection of thermo-sensitive genetic male sterility in diploid cotton (Gossypium arboreum L).

Diploid cotton, due to its inherent problem of stamen brittleness, its found unsuitable for traditional method of hybrid seed production which involves hand emasculation followed by pollination. Due to shortfall in other methods viz., Genetic Male Sterility (GMS), as well as, Cytoplasmic Genetic Male Sterility (CGMS), hybrid seed production in diploid cotton becomes costly and thereby, covers less area among the total cotton grown area.

Comparative transmission genetics of introgressed chromatin in Gossypium (cotton) polyploids.

Premise Of The Study: Introgression is widely acknowledged as a potential source of valuable genetic variation, and growing effort is being invested in analysis of interspecific crosses conferring transgressive variation. Experimental backcross populations provide an opportunity to study transmission genetics following interspecific hybridization, identifying opportunities and constraints to introgressive crop improvement. The evolutionary consequences of introgression have been addressed at the theoretical level, however, issues related to levels and patterns of introgression among (plant) species remain inadequately explored, including such factors as polyploidization, subgenome interaction inhabiting a common nucleus, and the genomic distribution and linkage relationships of introgressant alleles.