PERIDERM. Structure of Periderm and Related Tissues. Development of Periderm. Outer Aspect of Bark in Relation to Structure. Lenticels. References. SECRETORY STRUCTURES. External Secretory Structures. Internal Secretory Structures. References. THE ROOT: PRIMARY STATE OF GROWTH. Types of Roots. Primary ...
Since the first edition of this work was published in 1960, the advance of ultrastructural research in the wake of improvements in the electron microscope has demanded a sound knowledge of the anatomical structures on which observed ultrastructural complexities are based. This volume well fulfils the...
Ingymnosperms(plants with “naked seeds”—such asconifers,cycads, andginkgo), the ovules are not enclosed in anovarybut lie exposed on leaflike structures, themegasporophylls. A long time span usually separatespollinationandfertilization, and the ovules begin to develop into seeds long before ...
The seed structure is made up of three structures. The three components of seed anatomy are: Seed coat Embryo Endosperm The seed coat is the outermost covering of the seed. The seed coat shelters and conserves the embryo. Seed coats in dicot seeds contain two layers, the testa, and ...
through the phloem, are regulated by transport and transfer processes located in sources (leaves, stems, reproductive structures), phloem pathway and seed ... WH Zhang,Y Zhou,KE Dibley,... - 《Functional Plant Biology》 被引量: 227发表: 2007年 Members of the aquaporin family in the developi...
1.Anatomy of seed and seedling primary structure of Lonicea caerulea L.;蓝靛果忍冬种子结构与幼苗初生结构的研究 2.Comparison of Seed Structure of Progenies from Intergeneric Hybrids between Sinapis alba and Brassica napus白芥和甘蓝型油菜属间杂种后代种子结构比较 3.Seed microstructures of 8 medicinal ...
In gymnosperms (plants with “naked seeds”—such as conifers, cycads, and ginkgo), the ovules are not enclosed in an ovary but lie exposed on leaflike structures, the megasporophylls. A long time span usually separates pollination and fertilization, and the ovules begin to develop into see...
Vegetative structures. Palaeontographica151B: 171–196. Google Scholar -. 1979. The Callistophytaceae (Pteridospermopsida): II. Reproductive features. Palaeontographica. (In press.) Schimper, W. P. 1870-1872. Traité de paléontologie végétale, ou la flore du monde primitif. J. B. ...
Marketability of a fruit as seedless does not require complete absence of seeds as long as the seed structures are imperceptible during consumption. Chimaeric genes comprised of soybean β-conglycinin seed storage protein gene promoters linked to the bacterial RNase gene, Barnase, were tested for ...
Developmental morphology and anatomy of the reproductive structures in the sunflower (Helianthus annuus L.): A unified temporal scale In sunflower (L.), there has been an intense genetic selection for achenes with agronomic value, such as greater mass, oil content, and disease resistance... LI...