Eucalyptus urophylla*grandis clone DH32-26 variety breeding method

Abstract

The invention discloses a eucalyptus urophylla*grandis clone DH32-26 variety breeding method. First, a female parent eucalyptus urophylla U16 and a male parent eucalyptus grandis G46 are adopted as parents; and through the steps of emasculation bagging, pollen collection, artificial pollination, bag removing, seed collection and sowing, and breeding, the eucalyptus urophylla*grandis clone DH32-26 with consistent traits and stable genetic stability, and without trait separation is obtained. The variety has the characteristics of straight trunk, neat forest, small branches, no pest or disease, high average annual accumulation amount, and significant economic benefit. The variety is suitable for large-scale popularization.

Description

Technical field [0001] The present invention relates to the field of plant breeding, in particular to a breeding method for the clone DH32-26 of Eucalyptus urophylla. Background technique [0002] eucalyptus( Eucalyptus ), also known as Eucalyptus, is native to Australia. It was introduced to my country in 1890. Guangxi has developed eucalyptus planting for more than 100 years. Since the 1980s, a large number of eucalyptus species and provenance have been introduced, and nearly A large number of scientific and technological achievements have been obtained through hundreds of researches. At the same time, eucalyptus has brought abundant economic benefits. According to statistics, 15 achievements including the introduction and improvement of Dongmen eucalyptus and research on high-yielding cultivation techniques have won the National Forestry Department and the autonomous region's Progress Award, and achieved direct The economic benefit amounts to more than 10 billion yuan. The plan...

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Problems solved by technology

[0003] At present, there are many eucalyptus species in my country, such as Eucalyptus urophylla, Eucalyptus grandis, Eucalyptus blue, Eucalyptus durnen, Eucalyptus durn, etc., which can produce a variety of industrial woods; China has entered an ecological society, and the sustainable development strategy has become more and more popular in the world. The more countries and the public pay attention to and recognize it, the sustainable development strategy of my country's forestry is also guiding the development of modern forestry in countries around the world. However, due to the influence of eucalyptus species, although many species of eucalyptus in my country have strong growth ability, due to the short felling cycle, Immediate eucalyptus has strong regeneration ability. Due to successive years of felling and planting rotation, many eucalyptus planting areas have insufficient greening and serious soil erosion

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