Genetics of resistance to cotton leaf curl disease in 'Gossypium hirsutum' L. under field conditions

Article Abstract:

The cotton crop's susceptibility to insect pests and viruses in India has led to cotton leaf curl disease (CLCuD) becoming a major problem in the northern part of the country. The identification of sources of resistance and study of its inheritance is vital to the development of high-yielding CLCuD resistant varieties of cotton. An investigation was carried out on germplasm lines of 'Gossypium hirsutum' to identify the additional sources of resistance and to study the genetics of CLCuD in Northern India.

India, Environmental aspects, Diseases and pests, Plant immunology, Disease resistance (Plants), Cotton (Plant)

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A gene for leaf necrosis in chickpea

Article Abstract:

Necrosis of leaves was seen in the glabrous mutant of desi chickpea (Cicer arietinum L). The oldest leaves were the most affected and the intensity of necrosis decreased towards the apical meristem. Nec, a single recessive gene governed the necrotic characteristic, linked to glabrous shoots. Leaf necrosis is identified as a new genetic trait in chickpea.

Leaves, Chickpea, Chick peas

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Origins and divergence times of mammalian class II MHC gene clusters

Article Abstract:

Evolution of class II major histocompatibility complex genes is discussed. Their evolutionary history appears more complex than previously believed.

Major histocompatibility complex

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