Central Agricultural University

About: Central Agricultural University is a education organization based out in Imphal, Manipur, India. It is known for research contribution in the topics: Population & Agriculture. The organization has 1116 authors who have published 1157 publications receiving 9217 citations.

Genetic control of aluminium tolerance in pigeonpea (Cajanus cajan L.)

Abstract: Aluminium toxicity is a major factor limiting plant growth in acid soil and more adequate genetic tolerance is needed to improve pigeonpea adaptation and production in affected areas. To study the inheritance, tolerant lines IPA7-10, T-7 were crossed with sensitive lines Pusa 9 and Bahar. The parents, F1 ,F 2 and F3 generations were grown in a nutrient solution containing 30ppm aluminium for hematoxylin staining and root re-growth measure and classified for tolerance by stainingofroottipsandrootre-growth.ThesegregationratiosobtainedforaluminiumtoleranceintheF2andF3generations were 15:1 and 7:8:1, respectively. These results indicated that aluminium tolerance is controlled by two dominant genes.

An Overview of Gender Issues in Agriculture

Abstract: Agriculture occupies a key position in the Indian economy providing a source of livelihood for a majority of the population. Successes in agricultural front with high production levels, especially in food grains have indeed been achieved. But more energy in the form of mineral fertilizers, chemical pesticides and farm machinery are required every year to produce the same quantity of farm products. Historically, women have been the managers of natural resources as they are dependent on them for their livelihood and their family’s needs. The consequences of over exploitation of these resources have rendered them scarce. The rural women collect over 28% of all energy consumed in India in the form of firewood. Most of the 140 million tonnes of firewood burnt annually come from forests. Poverty and unemployment in rural areas have resulted in large-scale migration to urban areas. Women are being forced to take up more drudgerous jobs as a source of livelihood as most of the migrants are absorbed into the construction sector. Women form the largest work force in agricultural sector. Caring for livestock comes naturally to women. The most drudgerous jobs in livestock production like cleaning of the cattle sheds, feeding the cattle, collection of fodder etc. always fall on the woman. Care for young animals and backyard livestock is also largely done by women. In caring for sick young animals women have evolved several ethno veterinary practices. Despite recent agricultural innovations there is no respite for rural women. While agricultural innovations leads to the reallocation of family labour and the assignment to men of complete control over output and income, without associated changes in the allocation of obligations, welfare and nutritional status of the family may actually decline.

New additions to Indian fauna of Coccinellidae (Coleoptera)

Abstract: Fourteen species of Coccinellidae [Henosepilachna kathmanduensis Miyatake, Henosepilachna verriculata Pang and Mao, Afissa ampliata (Pang and Mao), Afissa craspedotricha (Yu), Afissa nielamuensis (...

Influence of geographic distance and genetic dissimilarity among clones on flowering synchrony in a Teak (Tectona grandis Linn. f) clonal seed orchard

Abstract: Abstract Influence of genetic dissimilarity among teak (Tectona grandis Linn. f.) clones on flowering synchrony was studied in a Clonal Seed Orchard (CSO) of teak in Karnataka, Southern India. Flowering phenology was monitored for all the 24 teak clones of the CSO and flowering synchrony between clones was assessed adopting a novel ‘overlap index’. Genetic dissimilarity among these clones was assessed adopting DNA based ISSR (Inter Simple Sequence Repeats) analysis. Large variation in the time of ‘flower initiation’ and of ‘peak flowering initiation’ was observed among the clones belonging to diverse sources, suggesting large asynchronous flowering. Cluster analysis based on ISSR marker indicated that the clones originating from a same source clustered together and there was a clear segregation based on their origin. Correlation analysis revealed a significant negative association between the average Jaccards’s dissimilarity index between pairs of clones and average peak flowering overlap index. Clones from geographically diverse regions had high genetic dissimilarity and also showed high flowering asynchrony within them.