Creating cold resistant strawberry via interploidy hybridization between octoploid and dodecaploid

Creating cold resistant strawberry via interploidy hybridization between octoploid and dodecaploid Strawberry cultivars showed limited cold resistance in the Northeast of China, while we obtained a synthetic dodecaploid strawberry hybrid ‘YH15-10’ (2n = 12x = 84) which showed sufficient cold resistance in this area. The reciprocal crosses between F. × ananassa cv. ‘Allstar’ (2n = 8x = 56) and ‘YH15-10’ (2n = 12x = 84) were carried out to select cold resistant strawberry in this study. The 134 seedlings were obtained from the cross of Allstar × YH15-10, while failed in its reciprocal cross. The 30 randomly selected seedlings were examined in terms of morphological characters, chromosome numbers and cold resistance. Most morphological characters were widely separated among F1 progeny with a high broad-sense heritability, which showed that these variations mainly resulted from genetic effect. Some hybrids exhibited heterosis, especially in growth vigor and runner production. Among the 30 tested hybrids, 28 decaploids (2n = 10x = 70), one octoploid (2n = 8x = 56) and one enneaploid (2n = 9x = 63) were observed. The 63.3% hybrids demonstrated higher cold resistance than that of ‘Allstar’ at P < 0.05. These high polyploidy strawberries have potential values in commercial production and modern cultivar improvement. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Euphytica Springer Journals

Creating cold resistant strawberry via interploidy hybridization between octoploid and dodecaploid

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Publisher
Springer Netherlands
Copyright
Copyright © 2017 by Springer Science+Business Media B.V.
Subject
Life Sciences; Plant Sciences; Plant Genetics and Genomics; Plant Pathology; Plant Physiology; Biotechnology
ISSN
0014-2336
eISSN
1573-5060
D.O.I.
10.1007/s10681-017-1980-7
Publisher site
See Article on Publisher Site

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