Proline Content in Brassica under High Temperature Stress

JIRCAS Journal
ISSN 13407686
書誌レコードID(総合目録DB) AA11030483

Proline content in different cultivars of cabbage, Chinese cabbage and their hybrids under high temperature stress was determined to identify differences in heat tolerance. Proline content in the leaves of the interspecific hybrids between cabbage cultivar (cv.) 'Yoshin' (Brassica oleracea var. capitata L.) and Chinese cabbage cv. 'Kenshin' (B.campestris var. pekinensis L.), and between Chinese kale cv. 'Sen-yo shirobana' (B.oleracea var. alboglabra Bailey) and 'Kenshin' was intermediate between that of their parents at 35℃. At 25℃ and 35℃, the proline contents were higher in stalks and floral buds than in leaves, and decreased drastically at 35℃. A negative correlation was found between pollen viability and the rate of decrease of the proline content in the floral buds. Proline contents were reduced by ca. 40% and pollen viability by 51%, when the temperature increased from 25℃ to 35℃. The increase in the proline content was 1.2, 1.6 and 1.8 times in the leaves of heat-tolerant cabbage cv. 'Yoshin', Chinese cabbage cv. 'Kenshin' and Chinese kale cv. 'Full white', respectively. In contrast, the increase in the proline content in the heat-sensitive cabbage cv. 'YR Kinshun', Chinese cabbage cv.'Chihiri 70' and Chinese kale cv.'Large leaf’ was 3.5, 17.6 and 3.6-fold, respectively. The results obtained suggest that proline accumulation may be used as a criterion for selection of heat-tolerant genotypes in Brassica.

作成者 Mohammad Mofazzal HOSSAIN Hiroyuki TAKEDA Toshihiro SENBOKU
著者キーワード Brassica oleracea B.campestris heat tolerance hybrids proline reproductive stage
公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 87
終了ページ 93
権利 Japan International Research Center for Agricultural Sciences
言語 eng