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Titolo:
Growth relationships of individual flowers during late stages of floral development of Rhododendron L-'Prize' and 'Gloria'
Autore:
Pemberton, HB; Wilkins, HF; Hodges, JS;
Indirizzi:
UnivSAinnesota, Dept Hort Sci & Landscape Architecture, St Paul, MN 55108 U Univ Minnesota St Paul MN USA 55108 ape Architecture, St Paul, MN 55108 U Univ Minnesota, Dept Appl Stat, St Paul, MN 55108 USA Univ Minnesota St Paul MN USA 55108 Dept Appl Stat, St Paul, MN 55108 USA
Titolo Testata:
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE
fascicolo: 8, volume: 76, anno: 1998,
pagine: 1350 - 1358
SICI:
0008-4026(199808)76:8<1350:GROIFD>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Keywords:
morphology; dormancy; growth modeling; multivariate multiple regression; controlled environment;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Pemberton, HB Texas A&M Univ, Agr Res & Extens Ctr, POB E, Overton, TX 75684 USA Texas A&M Univ POB E Overton TX USA 75684 rton, TX 75684 USA
Citazione:
H.B. Pemberton et al., "Growth relationships of individual flowers during late stages of floral development of Rhododendron L-'Prize' and 'Gloria'", CAN J BOTAN, 76(8), 1998, pp. 1350-1358

Abstract

Single terminal inflorescences from two-stemmed plants of Rhodadendron L, cv. 'Prize' and 'Gloria' were recurrently sampled during a 9 degrees C coldtreatment and subsequent forcing period in an 18 degrees C growth chamber until plants reached anthesis. At each sample period, bud length and width were measured on each inflorescence, while subtending bud scale, petal, stamen ('Gloria' only), style, peduncle and ovary length, ovary width, and flower weight were determined on the tao most basally attached flowers within an inflorescence for each cultivar. Polynomial regression models were calculated for each floral growth measurement over time, except for bud length and width, for each of the four flowers within a cultivar. Comparison of regression models revealed differences in floral part growth patterns among the various flowers within each cultivar. During the first week of placement in 18 degrees C forcing temperatures after the cold treatment, bud length was the only floral part to grow on 'Prize' plants, while only female flowerparts grew on 'Gloria' plants. These results indicate differences in growth resumption patterns between cultivars after cold storage. However, petal and style length were strongly correlated to flower weight for both cultivars indicating that these measurements could be used in laboratory or field situations to determine the floral stage of growth. The growth equations described would be useful for controlling the variability among shoots and flowers for analytical determinations, such as hormonal content analysis, andfor studying relationships of floral growth patterns to environmental stimuli that could be used to control flowering. The statistical techniques used in this research make it possible to reduce the number of plants for suchstudies, as measurements taken on different flowers on the same plant can be used for floral part growth comparisons despite the inherent correlationpresent between such measurements.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:09:58