The Nucleus
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Alien introgression in rice
The Nucleus - Tập 60 - Trang 251-261 - 2017
Cultivated rice, Oryza sativa has 22 wild species. They are a rich source of useful genes for rice improvement. Six wild species are closely related to cultivated rice and have the same genome. It is easy to transfer genes from these species to rice through standard hybridization procedures. However, various tissue culture and cytogenetic techniques are needed to transfer genes from distantly rela......
Comparative karyomorphological analyses of in vitro and in vivo grown plants of Aloe vera L. BURM. f.
The Nucleus - Tập 53 - Trang 89-94 - 2010
Aloe vera L. Burm. f. is used as a popular folk medicine with many cultivars growing naturally or in cultivation in different parts of the world. The present report describes the methods of in vitro propagation and conservation as well as detailed chromosomal analysis of two morphologically indistinguishable cultivars of Aloe vera obtained from NBPGR at the CAZRI (Central Arid Zone Research Instit......
Natural insecticidal proteins, the promising bio-control compounds for future crop protection
The Nucleus - Tập 64 - Trang 7-20 - 2020
Insect predation problem in agriculture and forestry has challenged researchers worldwide to identify newer eco-friendly insecticides. Among them Bacillus thuringiensis δ-endotoxin (Bt) has been the most widely used commercial insecticide till date. The advantages of Bt as a “green” insecticide are its high specificity to target insects (it is nontoxic to mammals, birds and even to most beneficial......
Genetic diversity analysis in drought stress tolerant cottons
The Nucleus - Tập 60 Số 1 - Trang 57-62 - 2017
C-heterochromatin and its base composition in holokinetic chromosomes of two species of Heteroptera (Insecta: Hemiptera)
The Nucleus - Tập 55 - Trang 163-166 - 2012
Constitutive heterochromatin shows a very diverse distribution pattern and base composition in different species. Serinetha augur (Rhopalidae) and Riptortus pedestris (Alydidae) share the same diploid chromosome complement i.e. 2n = 13 = 10A + 2 m + XO. The banding techniques have been applied for the first time on these two species to compare the distribution pattern and base composition of C-het......
An insight into plant–Tomato leaf curl New Delhi virus interaction
The Nucleus - Tập 60 - Trang 335-348 - 2017
Plants being sessile are constantly exposed to several stresses, which involve different types of abiotic and biotic stress factors. Biotic stress in plants is caused by various living organisms called plant pathogens including bacteria, viruses, fungi and parasites. Among these pathogens, plant viruses cause severe damage to world agricultural productivity. The reason behind such widespread dest......
Ploidy analysis of Helianthus species by flow cytometry and its use in hybridity confirmation
The Nucleus - Tập 59 - Trang 123-130 - 2016
Sunflower (Helianthus annuus L.) is one of the most important oilseed crops cultivated worldwide. It is one of the few crops that has been improved for several characteristics through interspecific hybridization. In the present investigation, the ploidy of 43 Helianthus species belonging to diploid, tetraploid and hexaploid status along with 2 accessions of cultivated sunflower was determined. As ......
Cytomorphological analysis and in situ 4C nuclear DNA estimation in species and varieties of Tabernaemontana (fam. Apocynaceae)
The Nucleus - Tập 59 - Trang 99-105 - 2016
Tabernaemontana coronaria, a common garden plant in tropical countries, has been used as a traditional medicine. The beneficial properties of T. coronaria are antioxidant and anti-inflammatory. The active biocompounds including the alkaloids in the leaf extract enhance the cholinergic activity in both central and peripheral nervous system. A detailed analysis of morphologi......
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