Access Restriction

Researcher Manoa, Iranacolaivalu
Advisor Shankar, A. G.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher University of Agricultural Sciences
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Agriculture & related technologies ♦ Garden crops (Horticulture)
Subject Keyword Crop Physiology ♦ Assessment of Genetic Variability For Zinc Content In Grains and Leaves of Pigeon Pea
Abstract Zinc is an essential micronutrient for both plants and humans, and zinc deficiency is known to cause several health hazards in humans afflicting three billion people globally. In order to overcome this disorder several strategies are employed including supplementation, fortification, diversification and biofortification. Among these strategies, biofortification is a promising solution. Available literature and data suggests that there is significant genetic variation exist both among and within plant species. With this background an attempt was made to assess the genetic variation in seed zinc content and physiological parameters of 240 germplasm lines of pigeon pea procured from ICRISAT. Contrast zinc types i.e. high and low zinc types were selected and grown under different zinc treatment (foliar and soil application) in pot experiment to study their zinc uptake. Screening of seed zinc content in 240 pigeon pea genotypes revealed that there is genetic variation exists among of pigeon pea genotypes (1.53mg to 6.95mg/100g). Physiological parameters including shoot and root parameters also showed genetic variation among the genotypes. The result showed a similarity in the seed zinc content of 240 pigeon pea germplasm lines obtained from ICRISAT and the ones which were grown in the root structure facility in UAS Bangalore. Zinc uptake studies of the contrast zinc types with external zinc application, showed positive response to foliar and soil application and exhibited significant increase in zinc content both in leaf and seed. However, high zinc types accumulated more zinc content than low zinc types. Among the various high zinc types screened, the probable genotype with superior genetic character is genotype 14 and 11 (ICP accession 7119 and 2484) with high uptake and translocation efficiency. Genotype 1 (ICP Accession No. 6443) was performing at a consistent nature with increase zinc content in all plant parts, as well as in yield. The superior types with high zinc content can be used as donor parent for the crosses with agronomically superior genotypes to develop superior lines (with high grain Zn content). These lines will provide high Zn through natural food to humans. They can be used to develop mapping population for Marker Assisted Selection (MAS) breeding.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Bangalore
Size (in Bytes) 7.70 MB
Page Count 144