| dc.contributor.author | Pame, A.R. |
| dc.contributor.author | Kreye, C. |
| dc.contributor.author | Johnson, D. |
| dc.contributor.author | Heuer, S. |
| dc.contributor.author | Becker, M. |
| dc.date.accessioned | 2019-12-04T10:58:11Z |
| dc.date.available | 2019-12-04T10:58:11Z |
| dc.date.issued | 2015 |
| dc.identifier.citation | Pame, A.R., Kreye, C., Johnson, D., Heuer, S. & Becker, M. (2015). Effects of genotype, seed p concentration and seed priming on seedling vigor of rice. Experimental Agriculture, 51(03), 370-381. |
| dc.identifier.issn | 0014-4797 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/934 |
| dc.description.abstract | Seedling vigor is important to help ensure good crop establishment. In direct-seeded rice, this is particularly
relevant when soil conditions are marginal. In Asia, about one third of the area of rainfed rice is situated
on unfavorable soils, many of which are low in plant available P. In such environments, as farmers tend
to have few resources, options to overcome poor crop establishment should be low cost and preferably
seed-based. The P content of seed depends on genotype and can be augmented by soaking seeds in a
P-containing solution prior to seeding (P-priming). In addition, the presence of the Pup1 quantitative trait
locus can reportedly confer tolerance to low soil P availability. We tested combinations of seed priming
(unprimed control, water priming, P-priming), and inherent seed P concentrations in contrasting rice
genotypes (DJ123, Sadri Tor Misri), and two near isogenic sister lines of IR74 with (+Pup1) and without
(?Pup1) the Pup1 QTL. Treatment effects on germination were studied in Petri dishes, while seedling
growth and P accumulation were assessed using pots with P deficient soil. Germination was less than 75%
in seeds with low seed P content. Seed priming with both water and P enhanced germination and seedling
growth. In plants growing from high P seeds, water priming outperformed P-priming. In Sadri Tor Misri
with low seed P, we observed a tendency for better performance in some parameters when P-primed.
While the presence of the Pup1 QTL in IR74 increased shoot biomass and total root length, these effects
could be further enhanced by water priming. Combining genetic and seed management approaches may
contribute to improved rice establishment in P deficient soils but its effectiveness depends on genotype and
seed attributes. |
| dc.language.iso | en |
| dc.subject | Rice |
| dc.subject | Genotypes |
| dc.subject | Vigor |
| dc.title | Effects of genotype, seed P concentration and seed priming on seedling vigor of rice |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.affiliation | University of Bonn |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.contributor.affiliation | Plant Nutrition, Germany |
| cg.contributor.affiliation | International Rice Research Institute |
| cg.coverage.country | Philippines |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and advanced research institute |
| cg.iitasubject | Genetic Improvement |
| cg.journal | Experimental Agriculture |
| cg.howpublished | Formally Published |
| cg.accessibilitystatus | Open Access |
| local.dspaceid | 76433 |
| cg.identifier.doi | https://dx.doi.org/10.1017/S0014479714000362 |
