Existence of cytomixis and associated meiotic anomalies, their effect on pollen viability/size and factors influencing cytomixis have been described in many species but not in Mentha longifolia. Presently, meiotic analysis of four M. longifolia populations from varying altitudes of Jammu Province (Jammu and Kashmir, India) revealed cytomixis between 16.67 and 19.31% pollen mother cells (PMCs) in three populations (considered cytomictic) and in 3.43% cells in the fourth one (named control). For each population, the frequency of cytomictic cells valued nearly same irrespective of the type of anthers (fresh/fixed) used and season (peak blooming/offseason) of their collection indicating that cytomixis is not influenced by seasonal variations/fixative treatment. To determine whether/not cytomixis in present populations is associated with numerical or structural chromosomal variations, meiocytes were scrutinized for chromosome count and behaviour. While PMCs of control population contained diploid chromosomes (2n = 24) exhibiting regular behaviour, 4.73 to 11.27% cells of cytomictic populations were aneuploid (2n = 22, 25 and 26)/nearly haploid (2n = 14)/polyploid (2n = 42/44) or had multivalents. In later populations, the presence of 17–19% cytomictic and 7.52–11.27% cytologically deviant cells accounted for low pollen viability (33.19–37.27%), with some of viable pollens (16.92 to 20%) being larger/smaller than normal one. However, control population containing few (3.43%) cytomictic cells exhibited high pollen viability (61.78%). In M. longifolia, finding of connected cells in all the four populations for two consecutive years points towards natural occurrence of cytomixis and is not a fortuitous event. Nevertheless, variation in the frequency of cytomictic cells in different populations seems to have some connection with environmental conditions where they were growing.

已经在许多物种中描述了胞质混合体的存在和相关的减数分裂异常，它们对花粉生存力/大小的影响以及影响胞质混合的因素，但在长寿薄荷中却没有描述。目前，对四个M. longifolia的减数分裂分析来自查mu省（印度查mu和克什米尔）不同海拔的种群显示，在三个种群中（被认为具有细胞分裂作用），花粉母细胞（PMCs）介于16.67％至19.31％之间；在第四类种群中，其花粉母细胞占3.43％（称为对照）。对于每个人群，细胞质细胞的频率值几乎相同，而与所使用的花药类型（新鲜/固定）和采集季节（高峰开花/淡季）无关，这表明细胞混合液不受季节变化/固定处理的影响。为了确定当前人群中的细胞混合是否与数值或结构染色体变异相关，对肌细胞进行染色体计数和行为检查。对照组的PMC包含二倍体染色体（2 n = 24）表现出正常的行为，细胞学群体中有4.73％至11.27％的细胞为非整倍体（2 n  = 22、25和26）/接近单倍体（2 n  = 14）/多倍体（2 n  = 42/44）或具有多价态。在后来的种群中，存在17–19％的细胞学细胞和7.52–11.27％的细胞学变异细胞，导致花粉活力低（33.19–37.27％），其中一些可行的花粉（16.92％至20％）大于/小于正常花粉。 。然而，几乎没有（3.43％）细胞质细胞的对照群体表现出高花粉生存力（61.78％）。在长叶M.，连续四年在所有四个种群中发现连通细胞，这表明自然发生了细胞混合症，这不是偶然的事件。然而，不同人群中细胞质细胞频率的变化似乎与它们生长的环境条件有关。