caa a22 4500 445322721 CHVBK 20180317142709.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10681-011-0400-7 doi (NATIONALLICENCE)springer-10.1007/s10681-011-0400-7 Phenotypic and QTL analyses of herbage production-related traits in perennial ryegrass ( Lolium perenne L.) [Elektronische Daten] [A. Sartie, C. Matthew, H. Easton, M. Faville] Phenotypic and genetic evaluation of morphological traits associated with herbage biomass production was undertaken in a perennial ryegrass (Lolium perenne L.) biparental F1 mapping population (n=200) with parent plants from cultivars ‘Grasslands Impact' and ‘Grasslands Samson'. Morphological traits measured on three clonal replicates of the parental genotypes and 200 F1 progeny in a glasshouse in two separate trials (autumn and spring) included: dry weight (DW), leaf elongation rate (LER), initial tiller number (TNs), final tiller number (TNe), site filling (Fs), tiller weight (TW), leaf lamina length, leaf tip and ligule appearance rates (ALf, ALg) and leaf elongation duration (LED). Principal component analysis of patterns of trait association identified negative correlation between TNs or TNe, and TW as the primary basis for morphological difference and indicated that either high LER or long LED could reduce TN. Plants with higher LER tended to have increased DW. Quantitative trait loci (QTL) were detected on all seven linkage groups (LG) of a perennial ryegrass linkage map for all but three traits. A total of 61 QTL were identified, many of which clustered at 15 shared genome locations. Significant genotype by environment effects were encountered, evidenced both by variation between experiments in genotype rankings and by a general lack of commonality for QTL for the same traits in the different experiments. Only five QTL, for ALf, ALg and TN, were conserved between autumn and spring trials. A QTL for TN and DW on LG6 is a strong candidate for application of MAS in future plant improvement work and was found to be co-linear with QTL for equivalent traits reported on chromosome 2 in rice. Springer Science+Business Media B.V., 2011 Autumn and spring production nationallicence Comparative analysis nationallicence Genotype by environment interactions nationallicence Herbage yield nationallicence Leaf nationallicence MAS nationallicence Tiller nationallicence Sartie A. AgResearch Ltd., Grasslands Research Centre, Private Bag 11008, 4442, Palmerston North, New Zealand aut Matthew C. Institute of Natural Resources, Massey University PN 433, Private Bag 11222, 4442, Palmerston North, New Zealand aut Easton H. AgResearch Ltd., Grasslands Research Centre, Private Bag 11008, 4442, Palmerston North, New Zealand aut Faville M. AgResearch Ltd., Grasslands Research Centre, Private Bag 11008, 4442, Palmerston North, New Zealand aut Euphytica Springer Netherlands 182/3(2011-12-01), 295-315 0014-2336 182:3<295 2011 182 10681 https://doi.org/10.1007/s10681-011-0400-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10681-011-0400-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sartie A. AgResearch Ltd., Grasslands Research Centre, Private Bag 11008, 4442, Palmerston North, New Zealand aut NATIONALLICENCE 700 1- Matthew C. Institute of Natural Resources, Massey University PN 433, Private Bag 11222, 4442, Palmerston North, New Zealand aut NATIONALLICENCE 700 1- Easton H. AgResearch Ltd., Grasslands Research Centre, Private Bag 11008, 4442, Palmerston North, New Zealand aut NATIONALLICENCE 700 1- Faville M. AgResearch Ltd., Grasslands Research Centre, Private Bag 11008, 4442, Palmerston North, New Zealand aut NATIONALLICENCE 773 0- Euphytica Springer Netherlands 182/3(2011-12-01), 295-315 0014-2336 182:3<295 2011 182 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer