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栽培甜菜和白花甜菜杂交获得的Ｆ＿１代以栽培甜菜连续回交产生了Ｂ＿１Ｆ＿２代和Ｂ＿２Ｆ＿３代￣［４］．在Ｂ＿２Ｆ＿３代中，２ｎ＝２７的植株达３０．１９％，推测其中大多数染色体组仍为ＶＶＣ。具有ＶＶＣ染色体组的核型中，含９个白花甜菜校长的染色体和１８个较短的栽培甜菜染色体，差别明显，易于区分。我们通过对Ｂ＿１Ｆ＿２（Ｂ１４，２ｎ＝２７）和Ｂ＿２Ｆ－３（２ｎ＝２７）植株间形态特征相似性比较、两个世代植株有丝分裂特异核型比较、两类植株减粉分裂行为比较、过氧化物酶和酯酶同工酶酶谱相似性比较，有力地证明了栽培甜菜和白花甜菜种间杂交后代中，从Ｂ＿１Ｆ＿２（Ｂ１４）到Ｂ＿２Ｆ＿３之间传递上存在着无融合生殖现象。
The F_1 generation obtained from the cross of cultivated beet and white beet cultivated beet by continuous backcross produced B 1 F 2 generation and B 2 F 3 generation [4]. In B_2F_3 generation, 2n = 27 plants reached 30.19%, suggesting that most of the chromosomes were still VVC. Among the karyotypes with VVC genomes, the chromosomes containing nine white beetroot principals and the 18 shorter chromosomes of cultivated beet were significantly different and easy to distinguish. We compared the morphological characteristics of plants between B_1F_2 (B14,2n = 27) and B_2F-3 (2n = 27), compared the mitotic specific karyotypes of two generations of plants, Comparison of the enzyme and esterase isozymes showed that there was an apomixis phenomenon in the transmission of B_1F_2 (B14) to B_2F_3 in interspecific hybridization between cultivated and white beet.