PHOTOPERIOD AND TEMPERATURE EFFECTS ON CORN
نویسندگان
چکیده
منابع مشابه
Effects of temperature on orthophosphate absorption by excised corn roots.
The uptake of orthophosphate ((32)P) by excised corn roots, Zea mays L. was studied using roots grown on 0.2 mm CaSO(4). Nine concentrations of KH(2)PO(4) from 1 to 256 mum were used at temperatures of 20 degrees , 30 degrees , and 40 degrees . Enzyme kinetic analysis was applied to the data obtained. Two apparent mechanisms (sites) of phosphate uptake were observed, 1 dominating at high P conc...
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Daily distributions of eclosion and mating activities of Pseudopidorus fasciata Walker (Lepidoptera: Zygaenidae) were recorded under natural and various laboratory conditions. Eclosion of this insect exhibited circadian gating in constant darkness (DD) but not in constant light (LL) at 28°C. Under natural conditions, the majority of adults emerged in midmorning with an eclosion peak around 1000...
متن کاملInfluence of photoperiod and temperature on migrations of meloidogyne juveniles.
Photoperiod influences the migration of M. incognita juveniles toward tomato roots. Approximately 33% migrated vertically 20 cm in 7 days to roots when 12 h dark were alternated with 12 h light. Only 7% migrated when light was constant for 24 h. Vertical migration of M. incognita juveniles was studied at 14, 16, 18, 20, and 22 C. The migration of M. incognita juveniles begins at about 18 C and ...
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efficient pollinators (Fujita et al., 1997; Schoen and Brown, 1991). Manual cross-pollination to produce large quantities of hybrid soyIn practice, the degree of sterility of CMS plants often bean seed is difficult and time consuming. An environmentally stable sterility system is one of the necessary components to produce large is less than 100%, depending upon the origin of the quantities of h...
متن کاملEffects of temperature and photoperiod on the termination of larval diapause in Lucilia sericata (Diptera: Calliphoridae).
Larvae of the blow fly, Lucilia sericata (Meigen), enter diapause in the third instar after cessation of feeding. The effects of temperature and photoperiod on the termination of diapause were examined. The diapause terminated spontaneously under the diapause-inducing condition of 20 degrees C and LD 12:12, although pupariation was not synchronous. Diapause development proceeded under a low tem...
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ژورنال
عنوان ژورنال: Canadian Journal of Plant Science
سال: 1974
ISSN: 0008-4220,1918-1833
DOI: 10.4141/cjps74-012