Corn Seed Germination and Vigor Following Freezing during Seed Development

The potential for an early autumn frost to reduce corn (Zea mays L.) seed quality is a concern for seed producers. This study evaluated the effect of freezing rate, freezing temperature (-6, -11°C) and duration (4, 6 h), ear attachment, and endosperm composition on seed germination and vigor (accele...

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Veröffentlicht in:	Crop science 2006-07, Vol.46 (4), p.1526-1535
Hauptverfasser:	Woltz, J, TeKrony, D.M, Egli, D.B
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions air temperature Biological and medical sciences Corn corn ears Disease control endosperm Food preservation Freezing frost frost injury Fundamental and applied biological sciences. Psychology Genetics and breeding of economic plants hybrids Loam soils Moisture content seed crop production seed development Seed germination seed quality Seeds Seeds and other planting stocks Temperature vigor water content Zea mays
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Zusammenfassung:	The potential for an early autumn frost to reduce corn (Zea mays L.) seed quality is a concern for seed producers. This study evaluated the effect of freezing rate, freezing temperature (-6, -11°C) and duration (4, 6 h), ear attachment, and endosperm composition on seed germination and vigor (accelerated aging [AA] and cold test) during seed development and maturation of six corn hybrids in 1998, 1999, and 2000. Severe reductions in seed germination and vigor occurred for the most immature seeds frozen at >400 g kg-1 seed moisture content (SMC). The effect was reduced as seed developed for all hybrids resulting in a linear increase in germination and vigor to maximum levels at
ISSN:	0011-183X 1435-0653
DOI:	10.2135/cropsci2005.08-0292