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水产杂种优势
释义
水产杂种优势
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农学
水产杂种优势
释
aquatic heterosis
水产杂种优势
遗传基础不同的两个水生生物亲本杂交产生的杂种在生长势、生活力、生殖力、抗逆性、产量和品质等性状上优于其亲本的现象。杂种优势是生物界普遍存在的现象,对改良生物的生产性能有重要作用。一般具有杂种优势的杂种表现明显的近交衰退现象,且随繁殖世代增进而减退,因而一般只用杂种一代。
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age forming
age-friendly city
age-friendly community
age-friendly environment
age groups
age hardening
age-hardening
age heaping
age identification of crude drug
ageing
ageing box
ageing drum
ageing factor
ageing management of main components in reactor coolant system
ageing management of nuclear power plant
ageing of insulating material
ageing of insulation
ageing of polymer
ageing process
ageing society
ageing star
ageing work
ageism
age makeup styling
age-metallicity relationship
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