Handbook on the Morphology of Common Grasses

Gandhi, Dhara; Pandya, Neeta; Albert, Susy

doi:10.1201/b19888

Cited by 5 publications

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“…hilum is terminal, basal and punctiform. Characters of colour of seed have been utilised by different authors in describing different taxa (18,19). Colour of seed in the investigated taxa is normally a mixture of grey and brown colours.…”

Section: Issn: 2348-1900mentioning

confidence: 99%

Seedling Morphology of some selected members of Commelinaceae and its bearing in taxonomic studies

Bose¹,

Paria

2019

Plant Sci. Today

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Seedling morphology of eight species from four genera of the family Commelinaceae viz. Commelina appendiculata C.B. Clarke, C. benghalensis L., C. caroliniana Walter, C. paludosa Blume, Cyanotis axillaris (L.) D. Don ex Sweet, C. cristata (L.) D. Don, Murdannia nudiflora (L.) Brenan and Tradescantia spathacea Sw. are investigated using both light and scanning electron microscopy. The seedling morphological features explored include germination pattern, seed shape, surface and hilum, root system, cotyledon type, cotyledonary hyperphyll (apocole), cotyledonary hypophyll (cotyledonary sheath), hypocotyl, first leaf and subsequent leaves. All taxa studied had hypogeal and remote tubular cotyledons. However, differences in cotyledon structure (apocole, cotyledonary sheath), seed, hypocotyl, internodes, first leaf and subsequent leaves were observed. Variations of those characters were used to prepare an identification key for the investigated taxa. Commelina spp. and Murdannia nudiflora of the tribe Commelineae were found to differ from Cyanotis spp. and Tradescantia spathacea of tribe Tradescantieae in the petiolate first leaf with papillate margins on upper surface with 6-celled stomata and the glabrous epicotyl. The presence of an elongated cotyledonary sheath, long apocole and extended periblast region appear to be synapomorphies for Commelina spp. and T. spathacea. The affinity of the investigated taxa as revealed through multivariate analysis supports some of the relationships inferred by pollen morphology, floral morphology and DNA (rbc-L, 5S NTS, trnL-trnF) data stated by previous authors.

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Section: Issn: 2348-1900mentioning

confidence: 99%

Seedling Morphology of some selected members of Commelinaceae and its bearing in taxonomic studies

Bose¹,

Paria

2019

Plant Sci. Today

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Fertilisation and Fruit Development

Kraehmer

Baur

2019

Grasses

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Taxonomic significance of caryopsis in subfamily Panicoideae (Poaceae) using scanning electron microscopy and light microscopy

Usma

Ahmad

Zafar

et al. 2019

Microscopy Res & Technique

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In recent study, 13 taxa of subfamily Panicoideae were investigated for morphological characterization of caryopsis. Light microscope (LM) and scanning electron microscope (SEM) were utilized to study macro‐ and micro‐morphological caryopsis features respectively. Caryopsis size in studied taxa was recorded as 1.5–10 mm long and 1–4 mm wide. Caryopsis color was brown, green, yellow, and whitish‐brown. Caryopsis shape studied was obovate, elliptic, linear oblate, and round shallowly obtriangular. Hilum position is grooved and depressed. Caryopsis compression type was lateral and dorsiventral. Major variations among studied taxa were observed in terms of caryopsis surface pattern and epicuticular projection types. Six types of caryopsis surface pattern were observed viz. scabrate, rugose, striate, reticulate, papillate, and scabridulous. Structures such as silica cells, bulges, spines, prickles, granules, and bicellular microhair were studied as epicuticular projections. Major variations were observed among Cenchrus pennisetiformis and Cenchrus ciliaris as both has entirely two different types of surface patterns and epicuticular projections. Anticlinal wall thickness and pattern as well as periclinal wall texture and level were investigated. The present research work emphasized on caryopsis characterization of subfamily Panicoideae and it is recommended to establish phylogeny within subfamily Panicoideae and with other subfamilies of Poaceae.

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Handbook on the Morphology of Common Grasses

Cited by 5 publications

References 0 publications

Seedling Morphology of some selected members of Commelinaceae and its bearing in taxonomic studies

Seedling Morphology of some selected members of Commelinaceae and its bearing in taxonomic studies

Fertilisation and Fruit Development

Taxonomic significance of caryopsis in subfamily Panicoideae (Poaceae) using scanning electron microscopy and light microscopy

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