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A technology of cosmos, sowing and raising seedlings, which is applied in the field of plant cultivation, can solve the problems of undiscovered and selected new varieties of cosmos, etc., and achieve the effects of reduced cultivation time, consistent flowering period, and plump plant type
Active Publication Date: 2015-01-07
五河县杰硕种养殖专业合作社
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After consulting the data, it is found that all types of cosmos currently sold on the market are conventional varieties, and no reports of breeding new varieties of cosmos have been found.
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[0016] Parental material: late-flowering cosmos (490Q-36Q), flower color is bright yellow, flower diameter 5.5-6.0cm;
[0017] Parental material: early flowering cosmos (603—MH4), flower color is light yellow, flower diameter 4.0—4.5cm
[0018] The breeding process of the present embodiment is specifically breeding according to the following steps.
[0019] 1. Selection of parental breeding materials: the late-flowering bright yellow cosmos variety was sown on June 25, 2006, and the early-flowering light yellow cosmos variety was sown on July 10. Both varieties are conventional varieties. After flowering in the autumn of that year, 15-20 individual plants of each variety were selected for bagging and self-crossing (the selected individual plants must have the obvious characteristics of the variety, and the plant type should be beautiful and plump, without disease, higher seed yield). The seeds harvested from a single cosmos plant of each variety are selected and mixed evenly...
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Abstract
The invention discloses a method for breeding early blossoming coreopsis. The method includes parent breeding material selection, field planting, pollination, obtainment of AF1 and BF1 generation hybrid seeds, hybrid seed sowing and seedling raising, selection of single plants with bright yellow flowers among the AF1 and BF1, obtainment of AF2 and BF2 generation hybrid seeds, cross pollination with the AF2 as female parent and the BF2 as male parent in third spring, obtainment of hybrid seeds AF3, AF3 sowing and seedling raising, field planting selfing to obtain F4 generation seeds, F4 generation seed sowing, operation of adjusting plant height to be lower than 60cm and flower diameter to be smaller than 4.5cm, and early blossoming, the seed yield is high, 3-4 generations of continuous selfing of a breeding target are performed, and a stable novel variety of early blossoming bright yellow coreopsis can be obtained. By means of the method for breeding early blossoming coreopsis, the obtained novel variety is vigorous in growth, good in appreciation, long in appreciation period, plump in plant shape and high in seed yield. By means of the method, bright yellow early blossoming coreopsis is selected, the variety types of the coreopsis can be increased, the types of appreciation garden plants are enriched, and the effect of greening appreciation can be improved.
Description
technical field [0001] The invention relates to a breeding method for ornamental plants, in particular to a breeding method for obtaining new varieties of cosmos, belonging to the technical field of plant cultivation. Background technique [0002] Cosmos (Cosmos bipinnatus) is an annual herbaceous plant belonging to the family Asteraceae, with a plant height of 30-120 cm, erect thin stems, many branches, smooth stems or fine hairs. Single leaves opposite, bipinnatisect, flower heads on slender pedicels, terminal or axillary, flower diameter 3-8cm. The edge of the disk is ligulate-shaped, and the tip of the petals is tooth-shaped. There are 7 to 8 petals, and there are different flower colors such as white, pink, red, yellow, purple, etc. The tubular flowers occupying the central part of the disk are all yellow. The achenes have rafters, the life span of the seeds is 3-4 years, the thousand-grain weight is about 5-7 grams, and the flowering period is summer and autumn. Hort...
Claims
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