Krotzky , A. and Berggold, R. and Werner, D. (1988) Plant characteristics limiting associative N2-fixation (C2H2-reduction) with two cultivars of Sorghum nutans. Soil Biology and Biochemistry, 20 (2). pp. 157-162.
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Abstract
Sorghum nutans cv. CSV 5 had 5–10 times higher rates of associative nitrogenase activity and decreased transpiration rates compared to cv. IS 5218 and produced significantly less stomata (1.3 × 107plant−) than the “low fixing” cultivar (2.3 × 107 plant−). Total exudate prodúction of cv. CSV 5 in all tested rooting media (suspension without and with glassbeads, sand) was up to 30% less than in cv. IS 5218. In contrast, release of exudates g−1 root dry wt was 10–20% higher than in cv. IS 5218. Differences in composition of root exudates from both cultivars were observed. Roots of cv. CSV 5 released significantly (40%) more polar substances, likely to be dicarboxylic acids (malic, succinic, fumaric and oxalic acid) than cv. IS 5218. Larger rhizosphere zones with pH-values below 7.5 were established by cv. CSV 5 compared to cv. IS 5218.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Fachbereich Biologie, Philipps-Universität Marburg, Karl v. Frischstr., D-355 Marburg, F.R.G., Federal Republic of Germany |
| Subjects: | Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 21 Aug 2014 07:45 |
| Last Modified: | 21 Aug 2014 07:45 |
| Official URL: | http://dx.doi.org/10.1016/0038-0717(88)90032-6 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/13390 |
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