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无性系选育
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无性系选育
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农学
授粉
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clonal selection and breeding
无性系选育
对于易无性繁殖的树种,选出不同家系、种源或杂交子代中的优良单株,通过无性繁殖形成无性系,然后按照一定的育种目标进行田间试验,对各个无性系进行比较鉴定,评选出最优无性系,最后推广应用于生产的育种过程。
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audible area
audible frequency
audible sound
audience
audience age
audience development
audience education
audience effect
audience evaluation
audience gender
Audience Hall of Qin and Han Dynasty
audience nomination
audience orientation
audience preferences
audience profession
audience psychology
audience rating survey
audience residence
audience rights
audience satisfaction
audiences feedback of radio and TV programs
audience's focus of attention on the stage
audience social classification theory
Audience studies of Chinese opera
audience theory of communication
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