Natural Crossing in Oats<sup>1</sup>

Griffee, Fred; Hayes, H. K.

doi:10.2134/agronj1925.00021962001700090005x

Cited by 5 publications

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“…Evidence of natural crossing was brought out by many authorities including Rimpau (1891); Jamieson (1897, 1898); Zade (1912); Livermore (1 9 12); Von Tschermak (1 9 18) ; Heribert-Nilsson (1919); CrCpin (1921); Carne and Limbourn (1924); Stanton and Coffman (1924); CrCpin (1925); Schribaux (1925); Griffee and Hayes (1925); Garber and Hoover (1929); Coffman and Wiebe (1930); Wexelsen (1931); Harrington (1932); Hoover and Snyder (1932); Derick (1933); Jones (1933); Aamodt et al (1934); Taborda de Morais (1937); Morey (1949); Thurston (1957); and Imam and Allard (1965 I have shown earlier that phenotypes matching artificially produced F , hybrids occur spontaneously in fields. Some of these putative hybrids might have resulted by selfing or from crossing in later generations, Fz, F,, .…”

Section: Discussionmentioning

confidence: 99%

On some relationships between Avena sativa and A. fatua (Gramineae) as studied from Canadian material

Baum¹

1968

Can. J. Bot.

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Many authorities consider that Avena sativa and A. fatua constitute a single species. This attitude is based mainly on morphology, because of the existence of different intermediate forms, and partly on the belief that A. sativa is a product of selection by man from A. fatua. More recently, because of the absence of chromosomal differentiation cytogeneticists have tended to support this contention that A. sativa and A. fatua constitute a single species. This paper reports the discovery of two new characters based on the detailed micromorphology of the lodicules and epiblasts. These new characters per se as well as in combination with other macromorphologic characters proved to be most reliable for the discrimination and recognition of these two taxonomically specific units. Observations on Canadian material revealed spontaneous F1 hybrids or F1-like phenotypes. An attempt is made to correlate the available cytologic and genetic data with the present findings. A one-way and restricted gene flow from A. fatua to A. sativa is assumed to occur between these two coexisting species.

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Section: Discussionmentioning

confidence: 99%

On some relationships between Avena sativa and A. fatua (Gramineae) as studied from Canadian material

Baum¹

1968

Can. J. Bot.

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The frequency of natural cross-fertilisation in sequential sowings of winter barley

Giles¹

1989

Euphytica

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Estimations of random mating frequency were computed for a series of sequential autumn sowings of populations of winter barley . The estimations were by means of the maximum likelihood scoring method and three varieties, each carrying a recessive genetic marker, provided three independent estimations for each population . High levels of out-crossing were found in sowings made early in September, and a trend towards absence of out-crossing in populations sown in late November was evident . Although fluctuations in this trend could be accounted for by fluctuations in meteorological factors, a more profound underlying effect was evident in that the three marker varieties behaved similarly, though to different degrees . It is postulated that the principle effect of sowing date, as it affects out-crossing, is upon the development of the flowering apex, and that environmental conditions at flowering time merely modify flowering behaviour .

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The Genetics and Cytology of Certain Cereals

Nishiyama

1933

The Japanese journal of genetics

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Natural Crossing in Oats¹

Cited by 5 publications

References 1 publication

On some relationships between Avena sativa and A. fatua (Gramineae) as studied from Canadian material

On some relationships between Avena sativa and A. fatua (Gramineae) as studied from Canadian material

The frequency of natural cross-fertilisation in sequential sowings of winter barley

The Genetics and Cytology of Certain Cereals

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Natural Crossing in Oats1

Cited by 5 publications

References 1 publication

On some relationships between Avena sativa and A. fatua (Gramineae) as studied from Canadian material

On some relationships between Avena sativa and A. fatua (Gramineae) as studied from Canadian material

The frequency of natural cross-fertilisation in sequential sowings of winter barley

The Genetics and Cytology of Certain Cereals

Contact Info

Product

Resources

About

Natural Crossing in Oats¹