繁殖

Because of heavy heterozygosity of cassava genome caused by stack propagation and outcross in longtime, the practice of biotechnology would resolve these problems in broad background.

由于木薯是无性繁殖的异花授粉作物，传统育种方法在基因重组方面受到局限；生物技术的应用却能够在很大程度上解决上述问题。

Scanziani and his supporters exaggerated the initial population's extreme physical features through planned perpetual inbreeding, as well as occasional introduction of other breeds into the Neo's bloodline, with the English Mastiff becoming everyone's favourite outcross.

Pierro Scanziani 和他的支持者们通过近亲繁殖巩固原始纽波典型的身体特征，同时偶尔引进一些其他犬的血统，英獒就是他们非常喜欢用的一个外来血统。

Outcrossing is the mating of two dogs of the same breed that are otherwise virtually unrelated.

同系繁殖是指交配犬只双方属于同一品种但没有实质上的联系。

Self-incompatibility SI is a widespread mechanism in flowering plants , which prevents self-fertilization and promotes outcrossing .

自交不亲和是显花植物预防近亲繁殖和保持遗传变异的一种重要机制，这一机制在植物界中普遍存在。

It was necessary to overexpose this positive record in order to enhance the presence of the Plankton bloom .

为了使大量繁殖的浮游生物的形象得到增强，必须使这一波段的正片记录曝光过量。

Due to the very dark nature of the scene , other metering methods tend to overexpose the moon .

为了使大量繁殖的浮游生物的形象得到增强，必须使这一波段的正片记录曝光过量。

What's more, to overfeed will result in the mass reproduction of the female mature monkeys, which may ruin the balance of the ecosystem.

再者，过度餵食会导致成熟母猴大量繁殖而破坏了生态平衡。

Reproduce naturally in the open rather than under an overstory.

宁在空旷地而不是树冠下自然繁殖。

Author mainly focuses on development of avian follicular and oviposition mechanism,and endocrinology mechanism of avian was also discussed.

作者系统阐明了雌禽卵泡发育过程和排卵机理，并对其生殖内分泌学调控特点进行论述，为提高家禽繁殖性能提供了参考依据。

Is one of the most important afforestation and ornamental species in China. Ovule abortion is a serious problem influencing the output of seeds and reproduction of Chinese pine.

但是油松胚珠败育是油松种子生产和繁殖面临的一个严重的问题，因此研究油松胚珠的发育机理和败育原因具有重要的理论和实践意义。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。