| Genetic Variability among Different Rice Cultivars for Phosphorus Uptake and Utilization (2000) | |||||
Abstract | |||||
| Ten rice (Oryza sativa) genotypes were evaluated for growth and utilization efficiency of phosphorus (P), in hydroponics using modified Yoshida solution containing three levels of phosphorus viz. P1 (10 mg L-1), P2 (5 mg L-1) and P3 (2.5 mg L-1). Substantial differences were observed among varieties for accumulation of shoot dry weight (SDW), root dry weight (RDW), root: shoot ratio (RSR) as well as for phosphorus utilization efficiency (PUE). Overall IR-8 and Basmati-370 out yielded all other genotypes in shoot dry weight. In Basmati-370 also produced the highest RDW, while KS-282 was least RDW producer. Maximum RSR was exhibited by C-49-1-80 followed by EF-76-1, DM-15-13-1 and Basmati-370. Maximum PUE was exhibited by Basmati-Pak followed by Kernel. P3 level showed highest value of PUE. Genotypes Basmati-Pak, Basmati-370 and Kernel showed maximum PUE as compared to all other genotypes and could be regarded as P-efficient. | |||||
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