Corn Seed Germination and Vigor Following Freezing during Seed Development

Woltz, J. Megan; TeKrony, D. M.; Egli, D. B.

doi:10.2135/cropsci2005.08-0292

Cited by 17 publications

(15 citation statements)

References 15 publications

(46 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One of the major concerns of hybrid maize seed producers is the potential for early fall frosts to reduce maize seed quality. This is especially the case in the northern US maize belt (Woltz et al, 2006) and the Hexin Corridor of Gansu province in China. Because of the risk of early frosts, seed companies must consider the stage of seed development when making harvesting decisions.…”

Section: Discussionmentioning

confidence: 98%

“…However, germination was not affected when seeds at lower SMC (300 g kg -1 ) were exposed to low temperatures. Woltz et al (2006) reported that seeds would have higher germination and vigor if they were harvested before a freezing event at an immature stage (B400 g kg -1 SMC) than if they were exposed to freezing temperatures. In this study, we found that the four traits of seed vigor were synchronized at the day after pollination.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

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

Liu

Xie

et al. 2010

Euphytica

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 98%

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

View full text Add to dashboard Cite

show abstract

“…Because the high protein genotypes had a genetic background partly related to Mo17 we suspected the premature harvest would have had a seed quality effect. However, the seed quality was less affected by premature harvest than it would have been by leaving the corn in the field subject to frost (Woltz et al, 2006). Table I • C) with a greater impact during seed development, while in 2004 both experiments had only 3 stress degree days before pollination (data not shown).…”

Section: Field Experimentsmentioning

confidence: 89%

Seed quality of high protein corn lines in low input and conventional farming systems

Geus

Goggi

Pollak

2008

Agron. Sustain. Dev.

View full text Add to dashboard Cite

Seed quality is a major issue for crop establishment especially in low input farming systems, where varieties often grow under more stressful conditions than in conventional farming systems. Corn (Zea mays L.) seed for organic (low input) production will eventually need to be grown organically, thus research is needed to ensure excellent seed quality in organic corn seed production. The objective of this study was to compare seed quality and composition differences between a group of high protein corn genotypes grown under low input and conventional farming systems, and to compare the relative seed quality of these genotypes to two well known inbreds, B73 or Mo17. Twenty high protein breeding genotypes were planted during two growing seasons in conventional and organic nurseries near Ames, Iowa, to produce seeds for laboratory tests. The germination, saturated cold, accelerated aging, and soak test percentages of seeds produced organically were 5 to 11% lower than for seeds produced conventionally. Protein, measured by near-infrared reflectance, was unaffected by the production location, but the oil content of seeds produced organically was significantly higher (between 0.2 and 0.3% higher) than in the conventional system. Location by genotype interactions for most tests were non significant both years, indicating that genotypes selected for high seed quality in a conventional system will also have high seed quality when grown in a low input, organic system. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. Abstract -Seed quality is a major issue for crop establishment especially in low input farming systems, where varieties often grow under more stressful conditions than in conventional farming systems. Corn (Zea mays L.) seed for organic (low input) production will eventually need to be grown organically, thus research is needed to ensure excellent seed quality in organic corn seed production. The objective of this study was to compare seed quality and composition differences between a group of high protein corn genotypes grown under low input and conventional farming systems, and to compare the relative seed quality of these genotypes to two well known inbreds, B73 or Mo17. Twenty high protein breeding genotypes were planted during two growing seasons in conventional and organic nurseries near Ames, Iowa, to produce seeds for laboratory tests. The germination, saturated cold, accelerated aging, and soak test percentages of seeds produced organically were 5 to 11% lower than for seeds produced conventionally. Protein, measured by near-infrared reflectance, was unaffected by the production location, but the oil content of seeds produced organically was significantly higher (between 0.2 and 0.3% higher) than in the conventional system. Location by genotype interactions for most tests were non significant both years, indicating that genotypes selected for high seed quality in a con...

show abstract

“…In this study seeds were subjected to an artificial frost when they were immature and, consequently, damage should have been extensive. However, recent studies assign less importance to the characteristics of the endosperm in preventing or reducing the severity of frost damage in corn (Woltz et al, 2006). The embryo and embryo axis should have the most severe symptoms of freezing, when compared to the endosperm, and detection could be difficult.…”

Section: Frost Damagementioning

confidence: 99%

Feasibility of near infrared spectroscopy for analyzing corn kernel damage and viability of soybean and corn kernels

Agelet

Ellis²,

Duvick

et al. 2012

Journal of Cereal Science

View full text Add to dashboard Cite

The current US corn grading system accounts for the portion of damaged kernels, measured by timeconsuming and inaccurate visual inspection. Near infrared spectroscopy (NIRS), a non-destructive and fast analytical method, was tested as a tool for discriminating corn kernels with heat and frost damage. Four classification algorithms were utilized: Partial least squares discriminant analysis (PLS-DA), soft independent modeling of class analogy (SIMCA), k-nearest neighbors (K-NN), and least-squares support vector machines (LS-SVM). The feasibility of NIRS for discriminating normal or viable-germinating corn kernels and soybean seeds from abnormal or dead seeds was also tested. This application could be highly valuable for seed breeders and germplasm-preservation managers because current viability tests are based on a destructive method where the seed is germinated. Heat-damaged corn kernels were best discriminated by PLS-DA, with 99% accuracy. The discrimination of frost-damaged corn kernels was not possible. Discrimination of non-viable seeds from viable also was not possible. Since previous results in the literature contradict the current damagediscrimination results, the threshold of seed damage necessary for NIRS detection should be analyzed in the future. NIRS may accurately classify seeds based on changes due to damage, without any correlation with germination. KeywordsAgronomy, Seed Science Center, single seed, near infrared spectroscopy, discrimination The current US corn grading system accounts for the portion of damaged kernels, measured by timeconsuming and inaccurate visual inspection. Near infrared spectroscopy (NIRS), a non-destructive and fast analytical method, was tested as a tool for discriminating corn kernels with heat and frost damage. Four classification algorithms were utilized: Partial least squares discriminant analysis (PLS-DA), soft independent modeling of class analogy (SIMCA), k-nearest neighbors (K-NN), and least-squares support vector machines (LS-SVM). The feasibility of NIRS for discriminating normal or viable-germinating corn kernels and soybean seeds from abnormal or dead seeds was also tested. This application could be highly valuable for seed breeders and germplasm-preservation managers because current viability tests are based on a destructive method where the seed is germinated. Heat-damaged corn kernels were best discriminated by PLS-DA, with 99% accuracy. The discrimination of frost-damaged corn kernels was not possible. Discrimination of non-viable seeds from viable also was not possible. Since previous results in the literature contradict the current damage-discrimination results, the threshold of seed damage necessary for NIRS detection should be analyzed in the future. NIRS may accurately classify seeds based on changes due to damage, without any correlation with germination.

show abstract

Corn Seed Germination and Vigor Following Freezing during Seed Development

Cited by 17 publications

References 15 publications

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

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

Seed quality of high protein corn lines in low input and conventional farming systems

Feasibility of near infrared spectroscopy for analyzing corn kernel damage and viability of soybean and corn kernels

Contact Info

Product

Resources

About