QTL detected for grain-filling rate in maize using a RIL population

Liu, Z. H.; Hongqiang, Ji; Cui, Zitian; Wu, Xuehong; Duan, Lingling; Xue, Feng; Tang, Jihua

doi:10.1007/s11032-010-9410-8

Cited by 40 publications

(35 citation statements)

References 45 publications

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“…Even no common QTL across two stages were found. Much more stagespecific QTL were also shown for grain weight and grain filling rate in our previous study using the same population as in this study [43] and other research by Liu et al [29]. This tendency was consistent with the theory of developmental genetics [15,16].…”

Section: Stage-specific Qtl and Comparison With Qtl Detected In Previsupporting

confidence: 92%

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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: Stage-specific Qtl and Comparison With Qtl Detected In Previsupporting

confidence: 92%

“…Recently, QTL for Grain Fresh Weight (GFW) and Grain Dry Weight (GDW) at several stages after pollination have been reported by Capelle et al and Liu et al [28,29]. Most QTL showed stage specificity in both research.…”

Section: Introductionmentioning

confidence: 95%

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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“…The second restrictive factor was the changeful climate, although the weather at one location was similar at certain season; however the sunlight and temperature was always changeful at the same date in one location, so as to the weather at different locations. The changeful weather could affect the grain filling rate and then result to a different immature degree seed at different years or locations (Liu et al 2010). If the DAP of different seed were used as a rule to measure immature seed degree, the seed of RIL population with the same DAP which obtained at different years or locations must be different.…”

Section: Discussionmentioning

confidence: 99%

Identification of QTLs for maize seed vigor at three stages of seed maturity using a RIL population

Liu

Xie

et al. 2010

Euphytica

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In maize hybrid seed production, some hybrid seed in the field must be harvested before reaching physiological maturity because of the potential damage from early fall frosts. However, early harvesting can result in poor quality and low vigor of seeds. To elucidate the genetic basis of seed vigor at different stages of maturity, the seeds of a set of recombinant inbred line (RIL) populations at three different stages of maturity (32, 40, and 45 days after pollination; DAP), were used to evaluate the performance of four traits for seed vigor in the field. A genetic linkage map was constructed using 217 SSR makers covering 2438.2 cM with an average interval of 11.2 cM. The results showed that there were significant positive relationships among the four traits of seed vigor at all three sampling times, and all showed quantitative changes according to the degree of maturity of the seeds. However, the four traits of seed vigor were not significantly related to the 100-kernel weight. In total, we detected 16 different QTL for the four measured traits of seed vigor at three sampling times; five QTL were for germination energy, three for germination percentage, four for germination index, and four for vigor index. Interestingly, four QTL for seed vigor, which were detected at all three sampling times, were located in the same region on chromosome 7. This result implies that this region of chromosome 7 is important for seed vigor of seeds harvested before they reach physiological maturity.

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“…Seed growth rate and days of seed filling result the final seed weight. However, some researchers [28] reported higher grain yield of short season maize hybrids due to high plant growth rate. Crop and seed growth rate depends on genetic and environmental interactions.…”

Section: Leaf Area Index (Lai) and Plant Heightmentioning

confidence: 98%

Flowering Syndrome-Hybrid Performance Relationship in Maize 1-Agromonic Traits

Alkhazaali¹

2017

IJAAS

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Abstract:To determine the relationship between flowering syndrome and hybrid performance in some maize (Zea mays L.) crosses, selection on early and late flowering plants was undertaken. Selection was applied on plants of four inbreds; Zm19, Zm32, Zm51, and Zm61. Selected plants were propagated in the next season, grown in the third season and crossed to two testers (Zm21 late, and Zm60 early). The F1 seeds were planted in the fourth season in a randomized complete block design of three replicates in 83'000 plants/ha. This was done in the farm of the College of Agric., Univ. of Baghdad. The results showed that selection for divergent flowering of inbred gave significant difference in days to silking among all crosses. The days ranged between 62 d for early selects, to 66 d for late selects. This was reflected on time of seed filling that increased grain yield. The best crosses gave plant growth rate of 18.3 -21.6 g.m , and seed filling of 35 -38 d. The cross that gave highest response of selection (61 x 21) gave 1.79 kg.m -2 dry matter for early select, and 2.20 kg.m -2 for late flowering select cross. It was recommended to select on maize inbreds to create new variations for better traits provided using large inbred populations.

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QTL detected for grain-filling rate in maize using a RIL population

Cited by 40 publications

References 45 publications

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

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

Identification of QTLs for maize seed vigor at three stages of seed maturity using a RIL population

Flowering Syndrome-Hybrid Performance Relationship in Maize 1-Agromonic Traits

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