Received: 19-02-2013
Accepted: 22-04-2013
DOI:
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Selection of Thinner Pericarp Thickness for Quality of Fresh Waxy Corn
,
Nguyen Thi Hong Ngat
1
,
Nguyen Van Ha
1
,
Duong Thi Loan
1
,
Vu Thi Bich Hanh
1
,
Vu Van Liet
1
Keywords
Fresh eating, quality, thinner pericarp, waxy corn
Abstract
Waxy corn is commonly eaten fresh in Asian countries including Vietnam. Selection for thinner pericarp is a priority for enhancing tenderness in fresh waxy corn breeding. We have evaluated 48 of local maize cultivars and inbred lines in order to identify genetic materials that have thinner perricap for the waxy maize breeding with improved quality. The 48 cultivars and inbred lines were evaluated in the field experiment with two replication in 20012 Autumn-Winter season. Kernel pericarp thickness of cultivars and inbed lines (measured by micrometer) ranged between 51,6 to 118,9 µm. Six potential lines and cultivars with desirable pericarp thinness are D27, D34, D36, D14, D22 and D35 (D27 with 51.6 µm). Using SSR markers 28 cultivars and inbred lines were detected to have QTL controlling thinner pericarp traits. Based on phenotypic evaluatione and genetic markers, six cultivars and inbred lines, D14, D22, D27, D47, D36 and D44, possessing desirable agronomic characteristics, thinner pericarp were selected for high quality waxy maize breeding programme in Vietnam.
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