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9 results for “Musa velutina”
Figure. Cross-sections of ovaries of Heliconia psittacorum (A,B) and Musa velutina (C,D). Polyethylene glycol–embedded ovaries are on the left (A,C). Paraffin-embedded ovaries are on the right (B,D). Scale bars: 1 mm. Images obtained by Anastasia Romanov (A and C) and Bruce Kirchoff (B and D). in USE OF POLYETHYLENE GLYCOL (PEG, CARBOWAX) AS AN EMBEDDING MEDIUM PRODUCES RESULTS COMPARABLE TO PARAFFIN
Figure. Cross-sections of ovaries of Heliconia psittacorum (A,B) and Musa velutina (C,D). Polyethylene glycol–embedded ovaries are on the left (A,C). Paraffin-embedded ovaries are on the right (B,D). Scale bars: 1 mm. Images obtained by Anastasia Romanov (A and C) and Bruce Kirchoff (B and D).
FIGURE 3. SEM Photographs. a–d in Musa markkuana stat. nov. (Musaceae)-A reassessment of Musa velutina subsp. markkuana
FIGURE 3. SEM Photographs. a–d—Pollen (b, d A portion enlarged); e–h—Seed surface; i–n—Longitudinal section of seed (j, k, m, n portion of tegmen enlarged).
FIGURE 2. Anatomical sections. a, b in Musa markkuana stat. nov. (Musaceae)-A reassessment of Musa velutina subsp. markkuana
FIGURE 2. Anatomical sections. a, b—Cross section of lamina; c–f—Transverse section of petiole (d, f—A portion enlarged); g–j —Transverse section of midrib (h, j—A portion enlarged); k–n—Cross section of bract; o–r—Cross section of immature fruit peel. (Photos by V.S. Hareesh)
FIGURE 1. a–d. Musa markkuana. a in Musa markkuana stat. nov. (Musaceae)-A reassessment of Musa velutina subsp. markkuana
FIGURE 1. a–d. Musa markkuana. a—habit; b—Inflorescence at early stage; c—Inflorescence with advanced stage of male bud; d— Infructescence with ripened fruits; e—M. velutina Infructescence with split opened ripened fruits. (Photos by V.S. Hareesh & A.Joe)
FIGURE 2. Musa velutina subsp. markkuana. A. inflorescence. B. leaf base. C in Musa velutina subsp. markkuana (Musaceae): a new subspecies from northeastern India
FIGURE 2. Musa velutina subsp. markkuana. A. inflorescence. B. leaf base. C. cross-section of petiole. D. bract. E–I. female flower in parts: E. entire female flower. F. compound tepal. G. free tepal. H. gynoecium with staminodes. I. cross-section of ovary. J–K. bisexual flower in parts: J. entire bizsexual flower. K. gynoecium with androecium. L–P. male flower in parts. L. entire male flower. M. compound tepal. N. free tepal. O. stamen. P. pistillode. Q. hand of ripe fruit. R. seeds.
FIGURE 1. Musa velutina subsp. markkuana. A. habit. B. pseudostem. C. leaf base. D. inflorescence with young fruit and male bud. E. female flower. F. bisexual flower. G. male flower. H. ripe fruit. I in Musa velutina subsp. markkuana (Musaceae): a new subspecies from northeastern India
FIGURE 1. Musa velutina subsp. markkuana. A. habit. B. pseudostem. C. leaf base. D. inflorescence with young fruit and male bud. E. female flower. F. bisexual flower. G. male flower. H. ripe fruit. I. seeds. Photos by Alfred Joe.
Data from: Inflorescence and flower development in Musa velutina H. Wendl. & Drude (Musaceae), with a consideration of developmental variability, restricted phyllotactic direction, and hand initiation
Premise of research. Inflorescence and flower structure in the Musaceae is unique in the Zingiberales. The inflorescence lacks the obvious cincinnus structure that characterizes the order, and the flowers are unisexual. Previous studies were conducted using cultivated varieties and were carried out with sectioned material, which does not permit accurate developmental descriptions. Developmental study of a wild species with modern methods addresses these shortcomings and provides more accurate descriptions. Methodology. Young inflorescences and flowers were collected from botanical gardens in Hawaii and Australia and critical-point dried for observation with a scanning electron microscope. Pivotal results. All shoots and inflorescences have sinistrorse (left-handed) phyllotaxy, and the sequence of flower initiation is usually correlated with this pattern. Initiation begins on the cathodic side of the hand (opposite the direction of phyllotactic rise) and progresses anodically (in the direction of phyllotactic rise). Within this general pattern, the sequence of flower initiation is variable, even within the same inflorescence. Five patterns of initiation are reported, with additional variation within each pattern. Both male and female flowers have similar early developmental patterns but diverge at the time of petal/inner androecial formation. In male flowers the anterior side of the flower develops slightly ahead of the posterior, while in female flowers the posterior side develops slightly ahead of the anterior. While consistently present in the material analyzed here, these differences are not apparent at the time of gynoecial initiation or in the mature flowers. Conclusions. The banana inflorescence is another example of how higher-level phyllotactic patterns can influence the sequence of organ initiation at lower levels. Despite variability in the sequence of flower initiation in a hand, the best interpretation of the hand remains a cincinnus. Variability in inflorescence and floral development is rarely reported and may be more common than currently supposed.
FIGURE 3 in Musa velutina subsp. markkuana (Musaceae): a new subspecies from northeastern India
FIGURE 3. Map of Northeast India showing collecting localities of Musa velutina subsp. markkuana.
Data from: Inflorescence and flower development in Musa velutina H. Wendl. & Drude (Musaceae), with a consideration of developmental variability, restricted phyllotactic direction, and hand initiation
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