By B. M. Johri (auth.), Professor Brij Mohan Johri (eds.)
A very long time in the past botany was once considered as the scientia amabilis, the pleasant technology, eminently appropriate for leisured amateurs. in view that then, and especially during this century, it has grown significantly in its significance and in its intimate contacts with a variety of different disciplines of technological know-how, a few of which, like plant genetics and plant body structure, at one time certainly was once incorporated lower than the vast time period botany. despite the fact that such matters have improved into significant clinical fields in their personal, botany, the mum technology, maintains to keep up its valuable position: it's because it bargains with crops which represent essentially the most important life-supporting structures of this planet. moreover, interacting and taking advantage of advances made in different sciences, it has progressively advanced in a couple of parts. Experimental embryology of vascular crops is one such box the place astounding advances were made lately. The time is for this reason fairly opportune for the e-book of an authoritative e-book at the topic. it's very applicable that the publication has been deliberate and edited by means of Professor B. M. Johri, one among India's finest botanists, whose contributions in embryology, plant morphology and morphogenesis are across the world identified. He used to be heavily linked over a few years with Professor P. Maheshwari, the good botanist and embryologist, to whom the booklet is dedicated.
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Extra info for Experimental Embryology of Vascular Plants
Because of their role in long term uptake, cotyledons of gymnosperm embryos are very appropriate systems for the analysis of absorption, transport, interactions, and developmental effects of growth regulators. Although substances in the culture medium are taken up only through the cotyledons in Ginkgo (Bulard 1952; Ball 1959), this does not appear to be the case universally in gymnosperms. Sacher (1956) cultured excised embryos of Pinus lam- 3. 6. Ginkgo embryo grown in vitro illustrating Ball's method of culturing embryos with only the cotyledons embedded in agar.
The induction of adventitious embryos in angiosperm cultures is by now a welldocumented phenomenon (Raghavan 1966; Halperin 1969), and has been reported to occur in cultures of gymnosperms also (Konar 1963 a, b; Konar and Oberoi 1965; Norstog 1967; Norstog and Rhamstine 1967, Sommer et al. 1975). When mature embryos of Thuja orientalis (Biota orientalisj, a member of the Cupressaceae, were cultured on certain media, adventive embryos developed from the cotyledons in 8 weeks (Konar and Oberoi 1965).
J Cell Sci 8:467-487 Steeves TA, Sussex 1M (1972) Patterns in plant development. , New Jersey Vladesco MA (1935) Recherches morphologiques et experimentales sur I'embryogenie et I'organogenie des fougeres leptosporangiees. Rev Gen Bot 47:513-528 Walbot V, Brady T, Clutter M, Sussex 1M (1972) Macromolecular synthesis during plant embryogeny: Rates of RNA synthesis in Phaseolus coccineus embryos and suspensors. Dev Bioi 29: 104-111 Ward M (1954a) Fertilization in Phlebodium aureum J Sm. Phytomorphology 4:1-17 Ward M (1954b) The development of the embryo of Phlebodium aureum J Sm.