Three main genetic regions for grain development revealed through QTL detection and meta-analysis in maize

Li, Yuling; Yang, Meili; Dong, Yuchen; Wang, Qilei; Zhou, Yu‐Guang; Zhou, Qiang; Shen, B. Z.; Zhang, Feifei; Liang, Xun

doi:10.1007/s11032-011-9610-x

Cited by 16 publications

(18 citation statements)

References 65 publications

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“…The population development used in this study and the field experiment has been described in our previous research [27,43]. Briefly, 258 F 9 RILs were derived from a cross between two contrasting inbred lines, Dan232 and N04 by single-seed descent method.…”

Section: Plant Materials and Field Experimentsmentioning

confidence: 99%

“…Grain sample collections had been described by Li et al [43]. At 10 DAP, 20 DAP, 30 DAP, and 40 DAP, three to five years with uniform grain sets were harvested and the kernels on the middle two third of each ear were shelled manually and bulked within plot.…”

Section: Trait Evaluationmentioning

confidence: 99%

“…At 10 DAP, 20 DAP, 30 DAP, and 40 DAP, three to five years with uniform grain sets were harvested and the kernels on the middle two third of each ear were shelled manually and bulked within plot. According The measurements of seven traits related with grain matter accumulation had been described by Li et al [43], including GFW, GDW, Grain-Filling Rate (GFR, g/d) during six periods, increasing rate in fresh weight (FWIR, g/d) for five periods, and the activities of three enzymes AGPP, GBSS and SSS at 30 DAP. Trait measurements averaged over the two replications were used as the preliminary data in further analysis.…”

Section: Trait Evaluationmentioning

confidence: 99%

“…Finally, 207 SSR markers were used to construct the linkage map with Join map 3.0b [46]. This linkage map covered 10 maize chromosomes with a total length of 2408.8 cM and an average interval of 11.6 cM [27,43].…”

Section: Simple Sequence Repeat (Ssr) Analysis and Map Constructionmentioning

confidence: 99%

“…The same population had been used to map QTL for seven traits related with grain matter accumulation in our previous study [43]. Our main objectives in this study were to (1) reveal the phenotypic and QTL characteristics of GWC and GDR at different stages after pollination; (2) to compare the result of QTL detection for traits related with grain matter accumulation in our previous research to identify main genetic regions for grain development worthy of elucidation in further research and marker assisted selection (MAS) in maize.…”

Section: Introductionmentioning

confidence: 99%

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QTL Detection for Grain Water Relations and Genetic Correlations with Grain Matter Accumulation at Four Stages after Pollination in Maize

Yang¹

2014

J Plant Biochem Physiol

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Grain water relations were closely correlated with matter accumulation during grain development. In this study, QTL mapping for Grain Water Content (GWC) at four stages after pollination and Grain Dehydration Rate (GDR) during six intervals were done using 258 Recombinant Inbred Lines (RIL). Meta-QTL (mQTL) was revealed by meta-analysis using Bio Mercator for both traits herein and together with seven traits related with grain matter accumulation in our previous research. Among 40 QTL detected for GWC and 35 QTL for GDR, 45 QTL were stage/period specific. QTL on chromosome 5 could be considered as full-stage QTL. Eight of 11 mQTL included QTL for both traits. Grain matter traits were positively correlated with GWC, but negatively correlated with GDR in most cases. Low coincidences in QTL position and opposite allelic effects for two kinds of traits suggested that their simultaneous improvement might be realized. Selection for low grain moisture could be focused on QTL at bins 1.07-1.08, 2.08, 4.

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Section: Plant Materials and Field Experimentsmentioning

confidence: 99%

Section: Trait Evaluationmentioning

confidence: 99%

Section: Trait Evaluationmentioning

confidence: 99%

Section: Simple Sequence Repeat (Ssr) Analysis and Map Constructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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