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单词 Corylus americana
例句 Corylus americana
Involucre of 2 broad bracts, almost separate and not much longer than the fruit Hazel, Corylus americana. 10b. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State
We know nothing about the pollination requirements of any of these Corylus avellana or Corylus americana hybrids. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952
The hybrids between the Rush variety of Corylus americana and various varieties of C. avellana produced by the late J. F. Jones are very much worth while. Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946
As mentioned, one species, Corylus americana Walt., is native to much of Virginia. Northern Nut Growers Association Incorporated 39th Annual Report at Norris, Tenn. September 13-15 1948
The inter-crossing of selections of Corylus americana does not appear to be a promising line of attack in filbert breeding where hybrids with C. Avellana will thrive. Northern Nut Growers Association Report of the Proceedings at the Thirty-Eighth Annual Meeting Guelph, Ontario, September 3, 4, 5, 1947
Preliminary results on pollen storage indicate that Corylus americana pollen can be stored for eight months or more in a viable condition at 0° C. with a range of 30 to 40% relative humidity. Northern Nut Growers Association Thirty-Fourth Annual Report 1943
We made crosses there at Geneva, using the Rush variety of Corylus americana as the seed parent in many cases. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952
This breeding work resulted in the introduction in 1951 of the Reed and Potomac varieties, which were produced as a result of crosses between the American filbert, Corylus americana, and the European filbert, C. avellana. Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting Urbana, Illinois, August 28, 29 and 30, 1951
We do know that when the cross is made that the Corylus americana variety must be the seed-parent. Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952
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