The natural cross-pollination of crop plants with particular reference to the radish

Four populations of faba beans (Vicia faba L.) consisting of the black-spot-flowered varieties, Ackerperle, Diana, Herz Freya and UMFB-22, each combined with the white flowered variety, Triple White, were grown at three locations in each of 2 yr. The extent of natural cross pollination was estimated from a subsequent year’s grow-out of the Triple White test seed. The extent of natural cross pollination differed for varieties, locations and years, with years being the most significant. The year effect was probably due to different environmental stresses on the faba beans.Key words: Vicia faba, fertilization

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Natural cross pollination in Egyptian cotton (Gossypium barbadense L.)

The Journal of Agricultural Science ◽

10.1017/s0021859600065151 ◽

1976 ◽

Vol 86 (1) ◽

pp. 205-209 ◽

Cited By ~ 6

Author(s):

M. A. Elfawal ◽

M. A. Bishr ◽

E. K. Hassoub

Keyword(s):

Gossypium Barbadense ◽

Cotton Variety ◽

Cross Pollination ◽

Growing Seasons ◽

Natural Crossing ◽

Egyptian Cotton ◽

Natural Cross

SUMMARYThe percentage of natural cross pollination was estimated in the Alexandria area (Egypt) in two sites near and far from an apiary. The Egyptian cotton variety Giza 45 and the glandless strain Bahtim 110, as a marker parent, were used during three growing seasons. The average natural crossing within the square of the marker parent were 3·54 and 0·34% near and far from the apiary respectively. For the plants around the square of pollen source, however, the average of natural crossing was 0·56% near the apiary, while it was 0·21% far from the apiary. The natural crossing steadily decreased as the distance from the marker variety increased.

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Natural cross-pollination and the identification of hybrids between botanical varieties of Brassica oleracea L.

Euphytica ◽

10.1007/bf00038968 ◽

1968 ◽

Vol 17 (1) ◽

pp. 74-80 ◽

Cited By ~ 1

Author(s):

L. E. Watts

Keyword(s):

Brassica Oleracea ◽

Cross Pollination ◽

Brassica Oleracea L ◽

Botanical Varieties ◽

Natural Cross

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Natural Cross-Pollination in Lettuce, Lactuca sativa L.

Nature ◽

10.1038/1811084a0 ◽

1958 ◽

Vol 181 (4615) ◽

pp. 1084-1084 ◽

Cited By ~ 5

Author(s):

L. E. WATTS

Keyword(s):

Lactuca Sativa ◽

Cross Pollination ◽

Lactuca Sativa L ◽

Natural Cross

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THE USE OF POLLEN INSERTS FOR TREE FRUIT POLLINATION

Canadian Journal of Plant Science ◽

10.4141/cjps58-007 ◽

1958 ◽

Vol 38 (1) ◽

pp. 39-44 ◽

Cited By ~ 10

Author(s):

G. F. Townsend ◽

R. T. Riddell ◽

M. Y. Smith

Keyword(s):

Georgian Bay ◽

The Past ◽

Cross Pollination ◽

Tree Fruit ◽

Fruit Growing ◽

Unfavourable Weather ◽

Tree Fruits ◽

Natural Cross

Tests conducted in the Niagara and Georgian Bay fruit-growing areas for the past 3 years have indicated that pollen distributed from inserts placed at the entrances of honeybee colonies is effective as a means of cross-pollinating tree fruits. This technique is particularly useful in seasons when honeybee foraging activities are limited by unfavourable weather, or in plantings where a sufficient number of pollinator varieties for natural cross-pollination have not been provided.

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