Selection of common bean lines, recombinant inbred lines and commercial genotypes tolerant to low phosphorus availability in an acrisol soil on the basis of root traits and grain yield - Archive ouverte HAL Accéder directement au contenu
Chapitre D'ouvrage Année : 2013

Selection of common bean lines, recombinant inbred lines and commercial genotypes tolerant to low phosphorus availability in an acrisol soil on the basis of root traits and grain yield

Résumé

Common bean (Phaseolus vulgaris L.) is the most important food legume for human consumption worldwide and especially in Latin America and Africa, but low soil phosphorus (P) availability limits grain production in these areas. For these reason eighty five recombinant inbred lines (RILs) of BAT 477 x DOR 364 and twenty commercial bean genotypes were sown in plots in an Acrisol soil with low P availability to evaluate nine root traits and grain yield. The study was carried out in Pinar del Rio province in Cuba between November 2006 and February 2009. The plots received basal fertilization (N and K) and P fertilization between 15 and 90 kg P2O5 ha-1. Ten plants were sampled from each plot at R6 pod fill to evaluate root traits and shoot biomass, and at R9 physiological maturity to estimate grain yield. The 85 RILs showed great variability for root traits, grain yield and P stress tolerance calculated as relative grain yield. The commercial bean lines also showed large diversity in yield parameters. Principal Component Analysis showed that there were high and significant correlations between root traits (basal root number, primary root depth, adventitious root length and adventitious root number) and grain yield parameters (grain yield at 15 P level and relative grain yields). Adventitious root traits showed the greatest correlation with yield under low P. Promising RILs included 75.1.1, 60.1.1, 38.1.1, 14.1.1 and 38.1.1 and promising commercial bean lines included ICA Pijao, BAT 482, ICA 23, BAT 24 and BAT 832.
Fichier non déposé

Dates et versions

hal-01268658 , version 1 (04-02-2016)

Identifiants

  • HAL Id : hal-01268658 , version 1
  • PRODINRA : 268340

Citer

A. Garcia, L.A. Gomez, A. Morales, M. Mosquera, J.J. Pascual, et al.. Selection of common bean lines, recombinant inbred lines and commercial genotypes tolerant to low phosphorus availability in an acrisol soil on the basis of root traits and grain yield. Optimizing Productivity of Food Crop Genotypes in Low Nutrient Soils, 1721, IAEA International Atomic Energy Agency, 327 p., 2013, IAEA-TECDOC series, 978-92-0-113113-3. ⟨hal-01268658⟩
44 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More