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Suitability of A European Nuclear Collection of Brassica oleracea L. Landraces to Grow at High Temperatures
Author(s) -
Rodríguez V. M.,
Soengas P.,
Cartea E.,
Sotelo T.,
Velasco P.
Publication year - 2014
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/jac.12048
Subject(s) - brassica oleracea , biology , glucosinolate , crop , agronomy , brassica , brassicaceae , biomass (ecology) , cultivar , horticulture , botany
Statistical models predict that global warming will have a negative impact in crop yields in the next decades. Especially vulnerable are winter crops such as kales or cabbages ( Brassica oleracea L.). We evaluated the impact of high temperatures in morphological and biochemical traits of a B. oleracea core collection during early development. When grown at 30 °C, plants showed a reduction in chlorophyll content, early vigour and biomass compared with values observed on plants grown at 20 °C. Likewise, the total content of glucosinolates shows a reduction at high temperatures. The alboglabra group showed the best general performance at 30 °C for both morphological traits and glucosinolate content. Based on a cluster analysis, we selected four populations (MBG0072, MBG0464, MBG0535 and HRIGRU5555) as the most promising to be used in further breeding programs for heat tolerance.