Showing papers on "Avena published in 1970"
TL;DR: Counts of seedling deaths due to precocious germination in nature suggest that the observed variation in germination provides insurance against seedling losses due to somewhat erratic fall rains.
Abstract: Estimates of seed loss due to animal predation in Avena fatua and A. barbata over a number of sites in the California annual—type grasslands varied from 0% to 65% of the total seed load. Avena species showed complex patterns of variation in germination both between and within populations. Counts of seedling deaths due to precocious germination in nature suggest that the observed variation in germination provides insurance against seedling losses due to somewhat erratic fall rains. These factors are significant in regulation of Avena populations. See full-text article at JSTOR
45 citations
TL;DR: Evidence is provided that oats and peas are complementary in the forage mixture during this period of growth and maturation in southcentral Alaska and that growth was determinate for oats and indeterminate for peas.
24 citations
TL;DR: The strain CW490-2 of Avena sterilis L. possesses a single recessive gene, pg-13, for oat stem rust resistance, which confers resistance to a wide range of stem rust races.
Abstract: The strain CW490-2 of Avena sterilis L. possesses a single recessive gene, pg-13, for oat stem rust resistance. It confers resistance to a wide range of stem rust races. Gene pg-13 is not linked to Pg-1 or pg-9 but appears tightly-linked or allelic with Pg-4. A high level of sterility in the progeny of crosses between Avena sativa varieties and CW490-2 is apparently due to four interchange differences.
21 citations
12 citations
6 citations
Journal Article•
2 citations
TL;DR: Effect of yeast (Saccharomyces cerevisiae) sexual hormones on the elongation of etiolated Avena coleoptile segments was studied and a Hormone increased cell wall extensibility just as auxin does.
Abstract: Effect of yeast (Saccharomyces cerevisiae) sexual hormones on the elongation of etiolated Avena coleoptile segments was studied. The elongation was promoted by a hormone excreted by cells of mating type a, but not by α hormone excreted by cells of α type. The effect of the former was as great as that of 5 mg/1 indole‐3‐acetic acid in the first hour of application. The optimal concentration of a hormone was 10 units/ml. Its growth promoting effect was greatly inhibited by an antiauxin, 2,4,6‐trichlorophenoxyacetic acid. a Hormone increased cell wall extensibility just as auxin does. Testosterone, β‐estradiol, progesterone and ergosterol showed very little effect on the elongation of coleoptile segments.
2 citations
Journal Article•
2 citations
01 Jan 1970
1 citations
TL;DR: In this article, the optimum temperature for growth of oats was found to be 27°C day/22°C night over an eight week period and the plant S content showed an inverse relationship with yield.
Abstract: Oats were grown in perlite and nutrient solution at temperatures varying from 10/5°C (day/night) to 36/31°C. The optimum temperature for growth of tops was found to be 27°C day/22°C night over an eight week period. Plant S content showed an inverse relationship with yield. Uptake of S was low at low temperature (10/5, 15/10°C), but was balanced by retarded growth at this temperature. Hence, uptake did not restrict growth at low temperature.