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1.
D. D. PANT F.L.S. NUPUR BASU 《Botanical journal of the Linnean Society. Linnean Society of London》1977,75(3):271-282
Details of the cuticular, epidermal and anatomical features of the leaves of Cathaya argyrophylla Chun & Kuang, are described and compared with those of three species of Keteleeria (K. davidiana (Bertrand) Beissner, K. fortunei (Murray) Carriere, and K. chien-peii Flous). The study supports the creation of Cathaya Chun & Kuang as a new genus of the Pinaceae. 相似文献
2.
The structure of the epidermis on various parts of the plantof Lactuca sativa Linn. is described. Development of stomatais studied in young leaves and stems. Tognini (1897) has previouslymentioned that the stomata on stems of L. virosa develop froma meristemoid with four cutting faces but the present studypoints out that the meristemoid cuts off only two mesogene neighbouringcells and the two others are perigene. 相似文献
3.
D. D. PANT F.L.S. B. K. VERMA 《Botanical journal of the Linnean Society. Linnean Society of London》1974,69(4):287-308
Epidermal and cuticular characters of 30 taxa of Ephedra (including 24 species and six additional varieties) are described and their taxonomic value is discussed. 相似文献
4.
DIVYA DARSHAN PANT F.L.S. RITA SINGH 《Botanical journal of the Linnean Society. Linnean Society of London》1989,100(2):183-196
PANT, D. D. & SINGH, R., 1989. On the possible occurrence of anisospory in some Hepaticae. Possible anisospory is reported for the first time in four species of Hepaticae, viz., Targionia indica Udar, Targionia hypophylla L., Cyathodium aureo-nitens Griff. (Mitt.), Cyathodium barodae Chavan. The report is based on observations of wide variations in size of spores comparable with those of anisosporous mosses of the family Orthotrichacae. 相似文献
5.
Cuticles, mature epidermis, and stomatal ontogeny in some speciesof the three genera of Ophioglossaceae and in Angiopteris evectawere studied. Development of stomata is perigenous in all Ophioglossaceaebut it is mesoperigenous (Piper type) in A. evecta. 相似文献
6.
Hitherto published accounts of the development of stomata inEquisetum are conflicting about the sequence of divisions andabout the formation of a sub-stomatal cell from a meristemoid.The present study of the development of stomata in a speciesidentified as E. ramosissimum subspecies ramosissimum supportsthe observations of Strasburger (1867) and Pant and Mehra (1964)on the basis of sections cut in various planes through internodesof the plant. 相似文献
7.
This paper describes the cuticle, epidermis, and the differentkinds of stomata met with in three species of Anemia.Observationsmade on the ontogeny of the Anemia type or floatingstomata in A. rotundifolia show that their meristemoids giverise to a guard cell mother cell by the formation of a periclinalwall as suggested earlier by other workers. 相似文献
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9.
A CALCIUM ACTIVATED PROTEASE IN SQUID AXOPLASM 总被引:7,自引:4,他引:3
Evidence for a protease in squid axoplasm which is selectively activated by Ca2+ and blocked by SH-inhibitors is presented. This protease appears to be particularly effective in degrading squid neurofilament proteins, but also extensively degrades various other major protein components in axoplasm. 相似文献
10.
Development of Stomata in Some Cruciferae 总被引:2,自引:0,他引:2
Epidermal structure and ontogeny of stomata are described forten species or varieties of Cruciferae. The mature stomata aretypically anisocytic. Their development is of the mesogenoustrilabrate type. The spiral sequence of divisions in the meristemoidmay be clockwise or anticlockwise. Very often the neighbouringcells divide and form successive generations of stomata whichbecome arranged in groups. Some theoretical implications ofthe study are also discussed. 相似文献