Relationship of Stelar Lesions to Radicle Growth in Corn Seedlings 1

摘要: Chilling during imbibition of Zea mays L. kernels resulted in anatomical lesions across the stele radicles, and subsequently reduced growth radicles. The objective was to determine if stelar lesion formation accounted for radicle reduction. Inheritance patterns, source seedstodrs, maturity kernels, surgical treatments pericarp endosperm were used compare occurrence laboratory evaluations field-grown seedstocks. injury 5% (low) moisture measured as reduction after a 48 hour hydration treatment at 5 C followed by 4 days 25 when compared Similarly treated controls with 13% kernels. also formation. In cresses between sensitive inbred ‘Oh51A’ resistant ‘B8,’ both receive characters. While inheritance either character not altered substantially maternal parent studies intact damage chilling crosses more severe without increasing frequencies. Removal prior imbibitional lower frequencies inbreds hybrids. Various sources Oh51A had markedly different sensitivities chilling. Maximum sensitivity occurred before kernel maturation. Increasing or avoided injuries caused embryo, pericarp, each influenced severity injury. may contribute reduction, it only factor responsible corn.