Method for cultivating new variety of drought-tolerant wheat

Abstract

The invention discloses a method for cultivating a new variety of drought-tolerant wheat. The method includes the steps that first, after dormancy breaking and germination acceleration are performed on wheat, the wheat is forcibly vernalized to be 3 cm tall; second, when leaves of edible cactuses grow to be 80 mm to 100 mm long, the leaves are cut off on the leaf roots; third, the wheat is cut off on the tillering nodes, and the parts above the tillering nodes of the wheat serve as scions; fourth, grafting holes are drilled in the positions 20 mm to 30 mm away on the leaves of the edible cactuses; fifth, the scions are inserted in the grafting holes; sixth, the grafted scions are moved into a nutrition cultivation box to be cultivated for 30 to 35 days, water is sprayed, and foliage dressing is performed; seventh, the grafted scions are moved into an artificial intelligent climatic chamber, and wheat seeds are harvested after three months; eighth, 50% of the wheat seeds are grafted to the leaves of the edible cactuses for backcross, and second filial generation seeds are obtained; ninth, 50% of the second filial generation seeds are grafted to the leaves of the edible cactuses for backcross for the third time, and third filial generation seeds are obtained. According to the method, through root-cutting regeneration of allopolyploid wheat, the new variety of drought-tolerant wheat is cultivated, and the new variety of drought-tolerant wheat has good drought tolerance so that the yield of the wheat can be expected to increase.

Description

technical field [0001] The invention relates to the technical field of wheat breeding, in particular to a breeding method for a new drought-resistant wheat variety. Background technique [0002] Wheat is one of the three major grains. It is a major food crop widely planted in the world. Almost all of its output is used as food. However, about 70% of wheat is distributed in arid and semi-arid areas. Drought has a wide and serious impact on wheat. It can simultaneously affect the physiological metabolic processes of wheat such as photosynthesis, respiratory metabolism, water status and changes in various enzymes. Therefore, research on wheat drought resistance and drought-resistant wheat breeding have become one of the important topics in the world today. Faced with the increasing population pressure and the current situation of water resources shortage, dryland wheat breeding, drought-resistant, water-saving, high-yield and high-quality wheat varieties will be an effective w...

AI Technical Summary

Problems solved by technology

[0003] Edible cactus is native to tropical arid desert regions of America, and is a plant with good drought resistance. Therefore, it is an effective way to increase wheat yield by hybridizing wheat with edible cactus to make wheat have the drought resistance of edible cactus. The hybridization of edible cacti belongs to the distant asexual hybridization of interfamily, so there are not many successful examples