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Early evaluation of popcorn inbred lines for phosphorus use efficiency
Author(s) -
Mundim Gabriel B.,
Viana José Marcelo S.,
Maia Ciro
Publication year - 2013
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12119
Subject(s) - inbred strain , biology , selection (genetic algorithm) , phosphorus , genetic diversity , genotype , microbiology and biotechnology , agronomy , genetics , population , gene , computer science , chemistry , medicine , organic chemistry , artificial intelligence , environmental health
Phosphorus use efficiency ( PUE ) evaluation based on shoot dry weight in the early stages of plant development can be a useful measure to identify genotypes that are superior in phosphorus ( P ) use. The objectives of this study were to (i) identify inbred lines that are efficient and inefficient in P use, (ii) assess the genetic diversity among the inbred lines based on traits related to PUE , (iii) investigate the relationship among traits related to PUE and its components and (iv) estimate the expected responses to selection for increasing PUE . Twenty‐three S 6 popcorn inbred lines were evaluated under high and low P , and several traits related to PUE and its components were measured. Efficient and inefficient inbred lines under each P level were identified, and the genetic diversity assessment grouped these inbred lines in opposite clusters. Phosphorus acquisition efficiency ( PAE ) was the most important component of PUE in the early stages of plant development, and the direct selection for PAE seems to be the best method for increasing PUE in these stages.