Abstract
The advance in intrasection and intersection cross breeding of poplars in China over the past 50 years is reviewed. Great progress has been made in Sections Leuce and Aigeiros, and satisfactory results of intersection hybridization have been achieved in the crossing between Sections Tacamahaca and Aigeiros. The modes of hybridization include single cross, double cross, triple cross, backcross, etc. It is known that using hybrids as parents to cross with other species or hybrids is an effective and easy way to obtain heterosis. Fast growth, cold and drought tolerance, pest and disease resistance, narrow crowns and rootage, etc. are breeding goals. The conventional artificial crossing is still a major breeding method, and a combination of the conventional artificial crossing with physical radiation and chemical induction can create new triploid individuals that possess higher yield potential. The super clones cultivated have already displayed enormous socioeconomic and ecological benefits in practice. Finally, the problems that investigators have to face at present are discussed as well as some strategies in poplar cross breeding in China.
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Claims 5
Claim · model-written summary
Great progress has been made in intrasection cross breeding of poplars in Sections Leuce and Aigeiros.
PopulusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cross Breeding of Poplars in China”
e1“Great progress has been made in Sections Leuce and Aigeiros”
Claim · model-written summary
Satisfactory results of intersection hybridization have been achieved between Sections Tacamahaca and Aigeiros of poplars.
- Outcome
- satisfactory results of intersection hybridizatione2
- Qualifier
- Sections Tacamahaca and Aigeirose2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cross Breeding of Poplars in China”
e2“satisfactory results of intersection hybridization have been achieved in the crossing between Sections Tacamahaca and Aigeiros”
Claim · model-written summary
Using hybrids as parents to cross with other species or hybrids is an effective and easy way to obtain heterosis in poplars.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cross Breeding of Poplars in China”
e3“using hybrids as parents to cross with other species or hybrids is an effective and easy way to obtain heterosis”
Claim · model-written summary
Conventional artificial crossing combined with physical radiation and chemical induction can create new triploid poplar individuals with higher yield potential.
- Treatment
- physical radiation and chemical inductione4
- Outcome
- new triploid individualse4
- Qualifier
- higher yield potentiale4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cross Breeding of Poplars in China”
e4“a combination of the conventional artificial crossing with physical radiation and chemical induction can create new triploid individuals that possess higher yield potential”
Claim · model-written summary
Super clones of poplar have displayed enormous socioeconomic and ecological benefits in practice.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cross Breeding of Poplars in China”
e5“The super clones cultivated have already displayed enormous socioeconomic and ecological benefits in practice”