Sponsored by the ASHS Commercial Horticulture Extension Working Group (CHEX), this colloquium brought together eight leaders in high tunnel research. Gathered from across the country, the speakers discuss topics ranging from integrated pest
and graduate students discussing creative platforms and models for teaching, research, and extension. An update on the Alliance for Cooperative Course Exchange in the Plant Sciences (ACCEPts) was presented as a framework for multi
Borthwick, 1957 ). This is a result of P FR falling below the effective threshold more rapidly when NI is from FR than from R radiation ( Kasperbauer et al., 1964 ). In contrast, R radiation provided by day extension or NI is ineffective at promoting
paclobutrazol and uniconazole liner dips on stem extension measured 28 d after application in five bedding plant species. Mean separation within each species and chemical by Tukey's honestly significant difference test at P ≤ 0.05. Regression lines were
Experiments were conducted to investigate the potential effect on floral bud initiation in strawberry (Fragaria × ananasa, cv. Chandler) by interrupting inductive short day cycles with a day-length extension treatment. Vegetative plants were exposed to 10-, 15-, or 20-day cycles of inductive short days in growth chambers. After receiving an inductive short day treatment plants were transferred to a greenhouse where they were exposed to non-inductive long days, which stimulated panicle elongation. Dissections of apical meristems immediately following each cycle of short days revealed that cycles of 20 days resulted in detectable floral bud formation. After 15 days in the greenhouse, all short day treatments had initiated floral buds. In the greenhouse, under long days, subsequent flowering in cohorts of plants which had previously received inductive short days showed a positive correlation between interruption of short days with day length extension and reduction in the number of floral buds initiated on earliest emerging panicles. These results suggest potential for manipulation of floral bud induction and potentially fruit size in Chandler, and perhaps other cultivars by interruption of a cycle of inductive short days with a day length extension treatment.