Tabebuia rosea (pink poui).

T. rosea is a tree widely used as an ornamental, due to its beautiful flower display, and cultivated for its wood (Orwa et al., 2009; Useful Tropical Plants, 2016). It has wind dispersed seeds, and rapid germination and seedling growth, all features which can promote its spread and its invasiveness (PROTA, 2016; Useful Tropical Plants, 2016). Takaki and Socolowski (2007) regard the species as having a high invasive potential in Sao Paulo, Brazil, due to its highly successful germination and recruitment under both direct sun and shade conditions. It is currently reported as invasive in Singapore and Hawaii, USA, without further details (PIER, 2016). It has the potential of spreading into other countries as it is cultivated in nurseries for its distribution as an ornamental in the Americas, Europe and Asia. Although not reported by Kairo et al. (2003) as invasive in Trinidad and Tobago, it is listed as an exotic in their work about invasive threats in the Caribbean region.

Preferensi Konsumen terhadap Anggrek Phalaenopsis, Vanda, dan Dendrobium

Penelitian preferensi konsumen dapat membantu pemulia dalam menentukan arah dan tujuan penelitian pemuliaan terkait dengan pemenuhan kebutuhan konsumen terhadap varietas unggul baru yang akan dihasilkan. Tujuan penelitian ialah untuk mengidentifikasi preferensi konsumen terhadap anggrek Phalaenopsis, Vanda, dan Dendrobium. Survei dilakukan terhadap 21 responden Phalaenopsis dan 32 responden Vanda, serta uji preferensi konsumen (100 panelis) anggrek Phalaenopsis, Vanda, dan Dendrobium dalam peragaan di arena Pameran Hortikultura Taman Mini Indonesia Indah (TMII) Jakarta pada Juli-November 2006. Hasil penelitian menunjukkan bahwa preferensi konsumen terhadap atribut kualitas anggrek Phalaenopsis, Vanda, dan Dendrobium ialah bunga berbentuk bulat, warna putih untuk Phalaenopsis dan Vanda, serta warna hijau untuk Dendrobium, diameter bunga berukuran sedang, motif bunga tidak berpola (polos), jumlah kuntum bunga sedang (10-15 kuntum), serta jumlah kuntum bunga yang mekar 70-80%. Selain itu ketahanan simpan bunga lebih dari 10 hari. Implikasi dari penelitian ini ialah bahwa untuk merakit varietas-varietas baru yang diinginkan konsumen, perlu memperhatikan atribut-atribut preferensi yang diinginkan konsumen, seperti bentuk, warna, diameter, motif, jumlah kuntum per tangkai, serta ketahanan simpan bunga yang lebih lama.<br /><br /><br /><br />Consumer’s preference research can help the breeders in giving direct and goal their breeding activity in conjunction to fullfil consumer’s needs of new superior plant varieties. The objectives of this study were to identify consumer’s preference on Phalaenopsis, Vanda, and Dendrobium orchid. This study was conducted using survey method through collecting data of 21 respondents of Phalaenopsis, 32 respondents of Vanda, and flower display method through interviewing 100 panelists of Dendrobium, Phalaenopsis, and Vanda during Horticulture Exhibition at Beautiful Indonesian Miniature Park (TMII) Jakarta on July till November 2006. The results showed that consumer’s preferences of Phalaenopsis, Vanda, and Dendrobium were the plant having rounded flower, white color for Phalaenopsis and Vanda, green color for Dendrobium, medium diameter, plain color, medium number of flower bud of 10-15 flower buds per stem, 70-80% bloomed-flower, and vaselife more than 10 days. Implication of this research was better that in producing new superior varieties the breeders shall take into consideration the consumer’s needs in keeping with the preference attributes such as shape, color, diameter, patern, number, and vaselife of flower buds.<br /><br />

Lisianthus 'UF Savanna' -- Eight Colors of Heat-Tolerant Single-Flowering Cultivars Released by the University of Florida's Lisianthus Breeding Program.

ENH-1066, a 5-page fact sheet by Brent K. Harbaugh and Zhanao Deng, reports the release of these cultivars appropriate for flowering potted plants, with intermediate height and a spray-type flower display. Published by the UF Department of Environmental Horticulture, February 2007.

Two-year Evaluation of Pansy Cultivars in the Florida Landscape

Pansy cultivars were evaluated for number of days to flower, flower size, flower color, plant habit, plant dimensions, weather tolerance, floriferousness, uniformity, and overall appearance during the winters of 1994–95 and 1995–96. In 1994–95, the number of days from sowing of seed to first flower among 122 cultigens ranged from 68 days for `Allegro Beaconsfield' to 94 days for `Springtime New Red'. Flower diameter ranged from 4.1 cm for `Allegro Pure Yellow' to 6.5 cm for `Bingo Yellow with Blotch'. Plant height after 114 to 122 days from seed sowing ranged from 11.4 cm for `Allegro Pure Orange' to 19.7 cm for `Fama See-Me'. Subjective ratings showed few differences among the cultigens in plant uniformity and floriferousness, but differences with respect to overall appearance. In 1995–96, the number of days from seed sowing to first flower for 113 cultigens ranged from 75 days for `Rally Light Blue with Blotch' to 97 days for `Happy Face White'. Flower diameter ranged from 4.8 cm for `Sprite Beaconsfield' and `Sprite Yellow' to 7.5 cm for `Bingo Yellow with Blotch'. Plant height at 140 to 143 days after seed sowing ranged from 12.4 cm for `Maxim Chiffon' to 26.5 cm for `Universal Plus White'. Subjective ratings showed no differences among the cultigens in plant uniformity or overall appearance and few differences in floriferousness or flower display.

322 WHY DOES SOUR CHERRY (Prunus cerasus) PRODUCE SO MANY MORE FLOWERS THAN FRUITS?

The number of flowers produced by sour cherry greatly exceeds the number of fruits developed. Two hypotheses to explain this disparity were investigated: (1) pollen may be limiting, and (2) a large flower display is important for pollinator attraction. Self-incompatibility, which is common in sour cherry, was considered. Fruit set, floral morphology, and flower density were measured on 18 sour cherry selections, both self-compatible and self-incompatible (SI), in the MSU sour cherry germplasm collection following open- and bulk-pollination. Although supplemental hand pollination resulted in a significant increase in fruit set, the final fruit set was still low (18% vs 14%) indicating that lack of pollination alone was insufficient to account for the low fruit set. The SI selections had significantly larger flower cups, pistil/petal size ratio, and more flowers/branch cross-sectional area suggesting that flower display may have an increased role in pollinator attraction in the SI selections. These results will be discussed in relation to 2 additional hypotheses: insufficient maternal resources and genetic factors resulting in pre- or post-zygotic selection.

Reduction of Postproduction Quality Loss in Potted Miniature Roses

Potted miniature roses (Rosa × hybrids L. `Belle Sunblaze') held after production in simulated home conditions (21C, continuous fluorescent light) yellowed prematurely, flower buds and leaves abscised, and flower buds failed to open. These symptoms were accelerated when the plants were exposed to low concentrations (1 μl·liter-1) of ethylene in the absence of inhibitors. Spray application of 100 μl BA/liter reduced leaf yellowing but had no significant effect on flower opening or bud abscission. Spray application of 1 mm silver thiosulfate (STS) strongly promoted flower display but did not prevent leaf yellowing. A combined BA and STS treatment greatly improved the postproduction quality of rose plants, particularly if applied 1 day before harvest. Chemical name used: benzyladenine (BA).

Flowering pattern and fruit production in the dioecious shrub Oemleria cerasiformis (Rosaceae)

Male plants of Oemleria cerasiformis have a larger flower display and a longer flowering period than females, and tend to show greater phenological variability. Male inflorescences generally begin to flower sooner than females, but reach their peak and finish flowering later. Their longer blooming period is mainly the result of less synchronous flower opening in males. In both sexes flowering tends to be completed more rapidly in later inflorescences. Fruit set in females is positively correlated with time of flowering (r = 0.313) and inflorescence size (r = 0.421). Hand-pollination of female flowers increased fruit set in most inflorescences, indicating that reproductive success in female O. cerasiformis may be pollen limited.