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Agronomy 2018, 8(12), 299; https://doi.org/10.3390/agronomy8120299

Seed Germination in Relation to Total Sugar and Starch in Endosperm Mutant of Sweet Corn Genotypes

1
Department of Agronomy, Khon Kaen University, Khon Kaen 40002, Thailand
2
Department of Horticulture, Khon Kaen University, Khon Kaen 40002, Thailand
3
Plant Breeding Research Center for Sustainable Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
4
Department of Agricultural Technology, Mahasarakham University, Mahasarakham 44150, Thailand
*
Author to whom correspondence should be addressed.
Received: 2 November 2018 / Revised: 3 December 2018 / Accepted: 5 December 2018 / Published: 9 December 2018
(This article belongs to the Special Issue Breeding and Genetics of Sugarcane and Other Sugar Crops)
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Abstract

The use of combinations of two or more genes controlling carbohydrate characters of corn is an attractive way to improve table quality of sweet corn. Poor seed quality of the inbred lines hinders the progress of this strategy for hybrid seed production. The objective of this study was to evaluate sweet corn inbred lines with combinations of double and triple recessive genes for germination percentage, seed vigor, total sugar content, and starch content. Eleven sweet corn genotypes including seven inbred lines (F6 generation) with different combinations of genes controlling carbohydrate characters and four F1 hybrids were used. The germination experiment was conducted under standard test between papers (BP) and accelerated aging (AA) test. The data were recorded for germination percentage, germination speed, normal and abnormal seedling, seedling length, and seedling dry weight. The seeds were analyzed for total sugar and starch content in endosperm at maturity stage. The results showed that single recessive genotype (sh2sh2) had high germination percentage and seedling vigor. The combinations of bt or sh2 gene with wx gene resulted in low germination percentage and poor seedling vigor. However, combinations of triple recessive genes (btbt sh2sh2 wxwx) had good germination in BP test but they performed poorly in AA test. View Full-Text
Keywords: seed germination; seed vigor; starch granule; sucrose content; gene combination seed germination; seed vigor; starch granule; sucrose content; gene combination
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Pairochteerakul, P.; Jothityangkoon, D.; Ketthaisong, D.; Simla, S.; Lertrat, K.; Suriharn, B. Seed Germination in Relation to Total Sugar and Starch in Endosperm Mutant of Sweet Corn Genotypes. Agronomy 2018, 8, 299.

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