pollen grains

Listing 11 - 20 from 115 for pollen grains

cactus-books.com: Bradleya 1 / 1983, Yearbook of the British Cactus and Succulent Society by BCSS
... O. Gale Jodrell Laboratory Royal Botanic Gardens, Kew, Richmond, Surrey. Summary: The leaf-anatomy, pollen and cytology of mature plants and seedlings of Calibanus hookeri (Lem.) Trelease have ... pollen grains are elliptic and monosulcate as in all the genera examined; and the karyotype (2n = 38) is similar to that of Nolina and Dasylirion. Successful pollination with one-year old refrigerated pollen ...
cactus-books.com

July 2003 Newsletter
... bloom. Hybridize  To create a new rose cultivar by selectively fertilizing one rose with the pollen of another one in the hopes that the progeny will carry some of the traits ... reproductive system, comprised of a filament that holds the anther (pollen pad). Stigma  The female portion of the flower that receives pollen grains for fertilization. Sucker  Stems that grow spontaneously from the roots ...
carolinadistrict.org

Angiosperm Families - Implicit Attributes
... appendiculate. Anthers separate from one another; not becoming inverted during development; bilocular; unappendaged. Pollen shed as single grains. Pollen grains not dispersed as long filaments. The ulcus without an operculum; without an annulus. Gynoecium ...
delta-intkey.com

Angiosperm Families - References
... corolla members (4/56), or both alternating with and opposite the corolla members (5/56). Pollen grains 1–4–40 aperturate. Gynoecium 1–4–‘many’ carpelled. Ovules unitegmic (71/82), or ... corolla members (9/39), or both alternating with and opposite the corolla members (24/39). Pollen grains 2–5–‘many’ aperturate. Gynoecium 1–5–‘many’ carpelled. Ovules unitegmic (13/121 ...
delta-intkey.com More from this site

Botany for the Beginner
... ovary with its style on top of it. The style receives pollen on its upper surface (the stigma) the whole female structure being known as the gynoecium or pistil. Pollen is produced at the ends of the male structure, the stamen, ... the flower exists to attract pollinators and position them such that pollen grains will adhere to their bodies and be deposited on a receptive ...
farrer.riv.csu.edu.au

Espalier
... like apples and plums would be fruitless. Any activity which results in the transfer of pollen grains from the stamen to the stigma of a flower can be thought of as pollination ... almost certain self-pollination. Another group of plants can never be pollinated by their own pollen. Apples, crabapples, many plums, blueberries, hazelnuts and some grapes are self-incompatible. This means that ...
gardenline.usask.ca

Corn
... is the kernel-filling stage). Avoid overhead watering: wet tassels and silks may mean wet pollen, hence no pollination, hence no corn. As with many vegetables, regular strong "deep watering" works ... origin is believed to have been the Mexican plateau or the highlands of Guatemala. Fossil pollen grains of teosinte have been found in drill cores of lake sediment beneath Mexico City, which ...
growingtaste.com

Catkin
... flowers are in catkins. The catkins usually hang loosely in the air, and the microspores (pollen grains), protected from the rain by the catkin scales, are readily blown out by the wind ...
home.manhattan.edu

The Virginia Camellia Society - Education - Fundamentals of Breeding Camellias
... than other forms. The stamen, the male reproductive organ, consists of the anther with the grains of pollen borne on a stalk or filament. The pistil, the female reproductive organ, consists of ... hand pollination is to place ripe pollen from the desired male flower onto the stigma of the desired female flower. Fertilization takes place when the pollen grains, assisted by a sticky substance secreted ...
members.cox.net

A Short Address on the Cross-Fertilisation
... them refuse to produce so much as a grain of pollen. This pollen-shedding, of which I have spoken, is quite automatic ... pollen you can on the tip of the brush. Turning your attention now to the flower you have selected as the seed parent, you gently dust some of the pollen grains ... to follow either sex indifferently. One little word of caution. Pollen retains its vitality quite a long time. It is ...
myweb.tiscali.co.uk

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