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Researcher Muktha, J.
Advisor Shankar, A. G.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Agriculture & related technologies ♦ Garden crops (Horticulture)
Subject Keyword Crop Physiology ♦ Evaluation of Pigeonpea (cajanus Cajan [l] Millsp.) Germplasm Lines For Seed Zinc Content and Physiological
Abstract Zinc is necessary and indispensable micronutrient essential for human, animal and plant life. But zinc deficiency is widely occurring in majority of soils of India making staple crops deficient in zinc impairing growth and quality. Thus, it is important to improve the zinc content in edible plant parts. In this regard, an attempt made to screen 100 accessions of pigeonpea for their seed zinc content showed a huge variability among which high and low seed zinc contrast types were selected for physiological evaluation in field and pot conditions under control, 0.5% and 1% zinc. The contrasts showed variation in plant height, chlorophyll content, and yield parameters. The high types maintained good growth even without zinc and also showed high leaf zinc content but responded well to 0.5% zinc while the low types could perform well under 1% zinc indicating that high types are efficient zinc uptakers. The germplasm lines ICP5094, ICP6256, ICP5099, ICP7069, ICP6489 and ICP6784 are found to be high yielders but the germplasm lines ICP7348 and ICP7239 can be considered as prospective lines for further work as they are coupled with high zinc content. Also, the high types performed better under water stress conditions and zinc application was effective for low types to overcome stress situations. The study of expression analysis of zinc transporters revealed that even under deficient zinc conditions, high types showed enhanced expression of CcZIP13477, CcZIP33570 and CcZIP47487 transporters, denoting that they are high affinity zinc transporters responsible for zinc accumulation under zinc deprived conditions.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Bangalore
Size (in Bytes) 9.10 MB
Page Count 115