Abstract
Three new self-compatible, late-blooming cultivars of almond [Prunus amygdalus Batsch, syn. P. dulcis (Mill.) D.A. Webb] have been released from the almond breeding program that is being developed at the Unidad de Fruticultura of Zaragoza (1). One of the main objectives of this program is to obtain late-blooming, self-compatible cultivars in an attempt to solve widespread problems of inadequate cross-pollination and spring frosts. The shell of these almonds is hard, fitting very well into the Spanish market, which is almost exclusively based on hard-shelled cultivars.
Abstract
‘Rachel’ and ‘Jan Cochran’ are Carla hybrid azaleas released in 1988 by the North Carolina Agricultural Research Service. Cold hardiness; later-blooming, semidouble, floriferous flowers; and moderate resistance to root rot were the objectives leading to selection and increase of ‘Rachel’. Cold hardiness, later-blooming floriferous flowers, moderate resistance to root rot and the unique, compact growth form resembling an English boxwood were the objectives leading to selection and increase of ‘Jan Cochran’. Stock plants have been made available to commercial nursery growers for propagation and distribution in the nursery industry.
Abstract
Respiration of flower-buds of Pyrus communis L., a late blooming species, and P. calleryana, an early blooming species, was investigated throughout the winter. Respiration of P. calleryana Decne at 5°C was twice as high as that of P. communis, whereas the respiration rates were similar at 25°. A large portion (60–70%) of the respiration at 5° was cyanide resistant in P. calleryana and much less in P. communis. The combination of inhibitors, cyanide (KCN) and salicylhydroxamic acid (SHAM), still only partially inhibited respiration. The residual respiration was much higher for P. calleryana than for P. communis. The nature of the residual respiration is not known.
Abstract
Response of hybrid summer squash (Cucurbita pepo L.) cvs. Seneca Zucchini and Zucchini Elite to trickle irrigation and black plastic mulch was evaluated in field studies conducted on a southwestern Indiana loamy sand soil during 1982 and 1983. Trickle irrigation and plastic mulch each increased plant growth, early bloom, and yield. Trickle irrigation reduced percentage of culls. Plant growth was correlated negatively with days to bloom after planting. Days to bloom were correlated negatively with yield; the early-blooming plants tending to yield more than the late-blooming plants. Significantly higher yields are possible with current cultivars using trickle irrigation and plastic mulch.
, four uniform and high-vigor potted plants were selected for each treatment ( Fig. 1 ). Although ‘Da Hong’ can set fruit after blooming naturally, and there are 14–16 flowering waves during the natural reproductive period in Taiwan, only 1–2 flowers; and
Abstract
With thousands of species and named cultivars to choose, it is a challenge to select appropriate plants for landscape applications (3). Selections of annual and perennial plants with specific pictorial characteristics (color, height, longevity, and blooming period), water requirements, and propagation methods can be time-consuming.
Abstract
Spring floral bud development of 18 sour cherry (Prunus cerasus L.) cultivars and 1 numbered selection were examined to identify late blooming cultivars. ‘Cerise Magnifique de Sceaux’ and ‘Meteor’ reached 50% full bloom 2–4 days later, and ‘Fructbare von Michurin’ 6–9 days later than ‘Montmorency’ in both 1983 and 1984.
. lasiopetala has a pink-rose flower, and P. missionum has an orange-red flower. Flowers of all three species only last 1 to 2 d, like most species in the Malvaceae species. Blooming periods for the three species are long, from summer to the first frost
Carnation cultivars `German Red' and `Chabaud' were planted in the field in Dallas, Texas, on 26 May 1994. During the subsequent 3 months, the average daily high temperature was 33C, and the average daily low temperature was 22C. `German Red' plants increased in height and diameter several-fold during this period. In contrast, `Chabaud' did not increase in height or diameter. `German Red' plants began flowering in early August, and by 2 Sept., all of the plants were blooming. None of the `Chabaud' plants produced flowers, and only 50% of the original plants were still alive on 2 Sept. Mean shoot dry weight per plant on 2 Sept. was 71.6 g for `German Red' and only 2.4 g for `Chabaud'. These results document the extraordinary heat tolerance of `German Red' carnation. This plant not only survived the summer, but also grew and began blooming during the hottest time of the year.
Abstract
Phalaenopsis are epiphytic orchids native to tropical Asia. The taxonomy of this genus is quite complex. For horticultural purposes, however, the species can be placed in one of 2 sections. One section contains those species (e.g., Phal. amabilis, Blume) which usually are spring blooming and produce inflorescences with 10 to 100 flowers. The flowers are quite large with a 5 to 10 cm natural spread and are pastel colored. The other section contains those species (e.g., Phal. lueddemanniana, Rchb.) which usually are summer blooming and produce inflorescences with 1 to 4 flowers. The flowers are quite small, only having a 3 to 5 cm natural spread, and are very brightly colored and patterned (1).