tetraploid plant

After the comparison of Lychnis fulgens diploid and tetraploid plant guard cell chloroplast numbers, the test results agree with the chromosome counting detection. That confirmed guard cell chloroplast counting were an effective method of determine level of Lychnis fulgens ploidy level.

通过比较剪秋罗四倍体植株气孔保卫细胞叶绿体数及其变异，其结果与染色体计数检测结果吻合，确认气孔保卫细胞叶绿体计数法是判定剪秋罗倍性水平的一种有效方法。

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Embryological Studies on the Crosses between Diploid and Tetraploid in Plant

植物二、四倍体杂交的胚胎学研究

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According to flowering habit of tetraploid sugarbeet mother plant, it is suitable to pick up anther, before 6. 00 am and do artificial hybridization after 6. 30. The chromosome multiple should be appraised in early to middle June.

根据四倍体甜菜种株开花特性，采取花药于早6时前，人工杂交在6时30分后进行为宜。染色体倍数性鉴定应在6月初至6月中旬进行。

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By some unexplained mechanism, the entry of the bacterium into a tetraploid cell stimulates the plant cell to divide, and the continued division of these cells results in this formation of the nodule.

通过某种不明的机制，细菌侵入四倍体细胞后刺激了植物细胞的分裂，这样持续分裂导致了根瘤的形成。

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Sterilized plantlets of diploid, triploid and tetraploid carambola ( Averrhoa carambola) were used as experiment materials to study the optimum culture conditions for the multiplication, rooting and transplanting of the plant.

以二倍体、三倍体和四倍体阳桃无菌组培苗为材料，研究了不同倍性阳桃增殖、生根和移栽的条件与方法。

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