Breeding method of drought resistant and cold tolerant Saccharum varieties/lines containing Erianthus fulvus Ness consanguinity

A sugarcane and sugarcane technology, applied in the field of drought-resistant and cold-resistant sugarcane varieties/lines, can solve the problem of inbreeding loss of genetic heterogeneity, poor adaptability of sugarcane varieties, vitality, adaptability, perennial roots and resistance of sugarcane varieties Problems such as reverse decline

Inactive Publication Date: 2013-11-20
YUNNAN AGRICULTURAL UNIVERSITY
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Problems solved by technology

In the first half of the 20th century, breeders used the germplasm resources of the genus Saccharum (Saccharum) for "interspecific hybridization" and "noble breeding". The hilly and dry land continued to expand; in the next 50 years, due to the large inbreeding coefficient of sugarcane and the decrease of wild germplasm from generation to generation, the bred sugarcane varieties were not widely adaptable, had low yields, and poor benefits
But unfortunately, in the sugarcane hybrid breeding in the second half century, due to the arduous and long-term nature of this work, many

Method used

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  • Breeding method of drought resistant and cold tolerant Saccharum varieties/lines containing Erianthus fulvus Ness consanguinity
  • Breeding method of drought resistant and cold tolerant Saccharum varieties/lines containing Erianthus fulvus Ness consanguinity
  • Breeding method of drought resistant and cold tolerant Saccharum varieties/lines containing Erianthus fulvus Ness consanguinity

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Embodiment 1

[0018] (1) Collection and storage of sugarcane grass pollen

[0019] From mid-August to mid-September, 2000, during the full flowering period of Canegrass, cut the spike stem (with leaves) of a single plant and place it in a well-lit room to raise the stem with clear water. Mining. Gently shake the flower spikes, collect pollen with a clean and smooth white newspaper, remove impurities such as anther wall, quickly transfer to a clean and dry petri dish, spread it flat, place it in a desiccator equipped with silica gel, and store it at 10°C Dry for 1 h, then transfer to a clean and dry 1.5mL plastic centrifuge tube, and store in a -80°C refrigerator until use.

[0020] (2) Pollination hybridization

[0021] From November to December, the sugarcane grass pollen stored at low temperature was taken out of the refrigerator and placed in a curling container. On the same day, it was carried by plane from Kunming to Hainan Sugarcane Breeding Farm (Sanya Yacheng), and immediately pla...

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Abstract

The invention discloses a breeding method of drought resistant and cold tolerant Saccharum varieties/lines containing Erianthus fulvus Ness consanguinity. The method provided in the invention makes use of Erianthus fulvus Ness wild species (E. fulvus) and Saccharum cultivars (Saccharum spp.) to perform "interspecific distant hybridization". The hybrid progenies undergo selection from a seedling stage, i.e. under conditions (dryland, high altitude) with natural environmental stress, thus obtaining new drought resistant and cold tolerant Saccharum varieties/lines suitable to plant at an altitude of over 1300 meters.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a breeding method for drought-resistant and cold-resistant sugarcane varieties / lines in low-latitude plateau areas. Background technique [0002] Sugarcane is the most important sugar crop in the world and in my country. Variety is the key to the development of sugarcane production. All sugarcane growing countries in the world create new germplasm and breed new varieties by using germplasm resources and sexual hybridization as the main method. In the first half of the 20th century, breeders used the germplasm resources of the genus Saccharum (Saccharum) for "interspecific hybridization" and "noble breeding". The hilly and dry land continued to expand; and in the next 50 years, due to the large inbreeding coefficient of sugarcane and the decrease of wild germplasm from generation to generation, the bred sugarcane varieties eventually resulted in poor adaptability, low yi...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01G1/00
Inventor 李富生何丽莲王先宏何顺长
Owner YUNNAN AGRICULTURAL UNIVERSITY
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