Determining Seed Performance of Frost‐Damaged Maize Seed Lots

DeVries, Mindy; Goggi, A. Susana; Moore, Kenneth J.

doi:10.2135/cropsci2007.01.0005

Cited by 25 publications

(39 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to avoid the detrimental effects of an early frost on seed quality, ears from the organic nursery were harvested prematurely in 2004. We know from previous work that Mo17 harvested prematurely (50-55% moisture content) has a significant reduction in seed quality even when artificially dried using ambient air (DeVries et al, 2007). 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.…”

Section: Field Experimentsmentioning

confidence: 99%

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

Geus

Goggi

Pollak

2008

Agron. Sustain. Dev.

Self Cite

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

Section: Field Experimentsmentioning

confidence: 99%

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

Geus

Goggi

Pollak

2008

Agron. Sustain. Dev.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fifty of those kernels were artificially frost damaged in their early stages of seed development (moisture content from 50 to 55%) when seeds were on the cob still in the husk. Ears were frozen in a Conviron growth chamber (Controlled Environment Limited, Winnipeg, Manitoba, Canada) during 24 h frost cycle (DeVries et al, 2007). Damaged and sound corn kernels were stored in a controlled constant temperature (10 C) and relative humidity (50%) storage for 1 year.…”

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

Self Cite

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

“…Regardless of species, immature seeds were susceptible to relatively mild freezing treatments, while germination of seeds that had reached PM was barely affected. A fall frost event can negatively impact on maize seed quality (DeVries et al 2007). Burris and Knittle (1985) also reported that an early fall frost in the Upper Midwest of the United States can cause lower seed germination and vigor in a period of every 4 or 5 years.…”

Section: Introductionmentioning

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

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

Determining Seed Performance of Frost‐Damaged Maize Seed Lots

Cited by 25 publications

References 30 publications

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

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

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

Contact Info

Product

Resources

About