Keneni, G. and Bekele, E. and Assefa, F. and et al, . (2015) Characterization of Ethiopian chickpea (Cicer arietinum L.) germplasm accessions for phosphorus uptake and use efficiency II. Interrelationships of characters and gains from selection. Ethiopian Journal of Appllied Science and Technology, 6 (2). pp. 77-96.
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Abstract
The efficient use of phosphorus fertilizer in an environmentally friendly and sustainable ways is preferred because of cost and ecological concerns. An experiment was conducted with 155 chickpea genotypes in 2009/10 at two locations (Ambo and Ginchi) in Ethiopia to study interrelationships, broad-sense heritability and genetic gains from selection for attributes of phosphorus-uptake and use efficiency and other agronomic characters on which data were collected. Significant positive correlations were observed between characters of plant tissue phosphorus contents (r = 0.22-0.85), between plant tissue phosphorus contents and phosphorus yields (r = 0.22-0.99), between plant tissue phosphorus yields (r = 0.23-0.89) and parameters of phosphorus-uptake and -use efficiency in a number of cases. Grain yield and some of its components showed significant positive correlations (r = 0.70-0.99) with phosphorus yield efficiency. Broad-sense heritability values ranged from 60-93% and genetic advance values ranged from 4-62% in the absence of phosphorus. The corresponding broad-sense heritability and genetic advance values in the presence of phosphorus ranged from 59-93% and 4-79%, respectively. Selection among the Ethiopian chickpea gene pool for most of the traits studied would be expected to be effective, indicating the need for the initiation of a planned breeding program for improving phosphorus uptake and use efficiency.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Broad sense heritability, Correlation coefficients, Genetic gain from selection, P uptake efficiency and P use efficiency |
| Author Affiliation: | Holetta Agricultural Research Center, P. O. Box 2003, Addis Ababa, Ethiopia |
| Subjects: | Plant Protection |
| Divisions: | Chickpea |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 03 Feb 2017 04:19 |
| Last Modified: | 03 Feb 2017 04:19 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/14698 |
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