Endogenous hormone profiles during early seed development of C. arietinum and C. anatolicum

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DOIResolve DOI: http://doi.org/10.1007/s10725-013-9819-2
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TypeArticle
Journal titlePlant Growth Regulation
ISSN0167-6903
1573-5087
Volume71
Issue2
Pages191198; # of pages: 8
SubjectAbscisic acid; C. anatolicum; Chickpea; Gibberellin; Indole-3-acetic acid; Zeatin
AbstractCicer anatolicum, a perennial species, has ascochyta blight resistance superior to that found in the cultivated chickpea. However, hybridization barriers during early stages of embryo development curtail access to this trait. Since hormones play an essential role in early embryo development, we have determined the hormone profiles of 4-, 8-, and 12-day old seeds from a Canadian chickpea (Cicer arietinum L.) cv. CDC Xena, from Indian cvs. Swetha and Bharati, and from a perennial accession of C. anatolicum (PI 383626). Indole-3-acetic acid content peaked on day 4 in CDC Xena, on day 8 in both Indian cultivars but only on day 12 in C. anatolicum. The cytokinins, isopentenyladenosine (iPA) and trans zeatin riboside (tZR) were predominant in CDC Xena and Swetha seeds on day 4, whereas cis zeatin riboside was the major component in Bharati. In C. anatolicum, iPA maxed out on day 4 and tZR on day 12. The bioactive gibberellin GA1 spiked on day 4 in CDC Xena and Bharati, on day 8 in Swetha but only on day 12 in C. anatolicum. Eight-day old seeds had the highest abscisic acid content in the cultivars but spiked on day 12 in the perennial species. The hormone profiles of the perennial species showed delayed spikes in all four hormone groups indicating that there is a mismatch in the hormone requirements of the different embryos. Improving synchronization of early seed hormone profiles of cultivated and perennial chickpea should improve interspecific hybrid production.
Publication date
PublisherSpringer
LanguageEnglish
AffiliationNational Research Council Canada; Aquatic and Crop Resource Development
Peer reviewedYes
NRC number54675
NPARC number21271002
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Record identifier3d6df9bf-4d51-4979-b1f9-794183539f28
Record created2014-03-11
Record modified2016-05-09
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