1) poplar triploid
杨树三倍体
1.
Methods for poplar triploid breeding mainly include selcting triploid from natural population, pollinatting with 2n pollens, crossing between tetraploid and diploid, and physical and chemical induction.
杨树三倍体培育主要有 4种方法 :选育天然三倍体 ;筛选天然未减数的 2n花粉人工授粉 ;四倍体与二倍体杂交 ;化学物理诱导。
2) Populus tremula ×P.tremuloides[3n]
三倍体山杨
1.
This paper reveals the major factors that affect survival rate of test tube transplants of Populus tremula ×P.
通过对三倍体山杨试管苗移栽成活率进行的探讨表明,影响试管苗移栽成活率的关键因素是:①不同基质对成活率有影响,腐殖土效果最佳;②温室内的温湿度对成活率有影响,适宜的移栽温度为20 ～30 ℃,最高不超过35 ℃,最低不低于15 ℃。
3) triploid of populus tomentosa
三倍体毛白杨
1.
Acetic acid pulping of triploid of populus tomentosa;
三倍体毛白杨乙酸法制浆的研究
2.
The application of the APMP from the triploid of populus tomentosa in the high-grade coated paper;
三倍体毛白杨APMP浆在高档铜版纸中的应用研究
3.
Soil Chemical Characteristics and Their Effects on C:N Ratio of Rhizosphere and Non-rhizosphere of Different Herbages in Triploid of Populus tomentosa Woodland;
不同草本层三倍体毛白杨根际与非根际土壤化学特性及其对C/N的影响
4) triploid Populus tomentosa
三倍体毛白杨
1.
Analysis on chemical components and fiber dimensions of triploid Populus tomentosa;
三倍体毛白杨木材化学成分和纤维形态的分析
2.
Study on the compression and hardening of Triploid Populus Tomentosa lumber;
三倍体毛白杨木材压缩密实化研究
3.
On Triploid Populus tomentosa in Relation to Forest-Paper Integration;
论三倍体毛白杨与“林纸”产业
5) the Triploid of Populus Tomentosa
三倍体毛白杨
1.
Effect of Beating on the Properties of P-RC APMP with the Triploid of Populus Tomentosa;
打浆对三倍体毛白杨P-RC APMP浆性能的影响
2.
Investigation on influential factors during APMP of the triploid of populus tomentosa;
三倍体毛白杨单段化学预处理APMP制浆影响因素的探讨
3.
The pretreatment processes of pre-steaming at 120℃, black liquor treatment at 120℃ and the black liquor treatment at 120℃followed by screw extrusion were applied in NaOH-AQ pulping and kraft pulping of the triploid of Populus Tomentosa, the Kappa numbers ofthe pulps obtained are decreased to 15 or lower and the extended delignification is achieved.
利用120℃预汽蒸、120℃黑液预浸以及120℃黑液预浸与螺旋挤压相结合三种预处理技术对三倍体毛白杨NaOH-AQ法和KP法进行改良蒸煮,纸浆卡伯值降至15以下,达到了深度脱木素的目的。
6) quick-growing triploid aspen
三倍体速生杨
1.
Based on the chemical composition analysis of the quick-growing triploid aspen,we can conclude that it is more appropriate to be used as a raw material for papermaking than straws.
对三倍体速生杨木的化学组成进行了分析研究,结果表明,与草类原料相比三倍体速生杨木更易于造纸。
补充资料：三倍体综合征和三倍体与二倍体混合体综合征
三倍体综合征和三倍体与二倍体混合体综合征
三倍体指增加一组额外的染色体，约占妊娠的2%。额外的染色体多来自父亲，66%由于两次受精，24%由于所受的精子是二倍体，10%由于受精的卵是二倍体。胎儿大都流产，约为染色体异常自然流产的20%。孕妇可以伴发不同程度的妊高征，胎儿由于胎盘囊性变或细胞遗传学异常而死亡，只有3%的69，XXY存活。偶有三倍体婴儿在妊娠28周后出生，二倍体与三倍体混合体综合征更少见，均有严重的发育缺陷。表现：胎盘大有囊性变。骨骼方面混合体综合征者骨骼生长不对称。颅骨发育不良，后囟门大，眼距过宽，虹膜缺损，甚至小眼。鼻梁低，耳畸形，口颌小。第3、4指并指，通贯掌纹，马蹄内翻畸形足。先天性心脏病(心房和心室间隔缺损)。男性尿道下裂，阴茎小，隐睾，睾丸间质细胞增生。脑异常。肾上腺发育不全，肾畸形。此类综合征胎体大多流产，出生后也会早期死亡。存活的二倍体与三倍体混合体一般都有精神运动障碍。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条