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Media type:
E-Article
Title:
562 PB 409 THE EFFECT OF PHOTOPERIOD ON THE COLD HARDINESS AND CARBOHYDRATE CONTENT OF TWO CULTIVARS OF SOUTHERN MAGNOLIA
Contributor:
Haynes, C.L.;
Dirr, M.A.;
Severson, R.
Published:
American Society for Horticultural Science, 1994
Published in:
HortScience, 29 (1994) 5, Seite 512b-512
Language:
Not determined
DOI:
10.21273/hortsci.29.5.512b
ISSN:
0018-5345;
2327-9834
Origination:
Footnote:
Description:
The cold hardiness of Magnolia grandiflora `Claudia Wannamaker' and `Little Gem' was determined under 8, 12 and 16 hour daylengths. Temperature was maintained at 25C day and 20C night. In addition, specific and total carbohydrates of both cultivars were analyzed. Cold hardiness and carbohydrate content were tested at the beginning (0 week), middle (5 week), and end (9 week) of the study. As expected, both southern magnolia cultivars were more cold hardy after 9 weeks at 8 hour daylengths with -9C cold hardiness estimates, as compared to 12 and 16 hour daylengths. The 12 and 16 hour daylengths resulted in similar cold hardiness estimates of -6C after 9 weeks. Additional cold hardiness and carbohydrate information will be presented.