Cytologische Grundlagen für Sterilitätserscheinungen in der GattungSalvia

Cytomixis in Pollen Mother Cells of Spearmint (Mentha spicata L.).

“…Some possible causes attributed to cytomixis are effect of fixation (Woodworth 1931, Jacob 1941, Linnert 1955, Takats 1959, Gottschalk 1970, mechanical injury (Sarvella 1958), pathological conditions (Bobak andHerich 1978, Morisset 1978), temperature anomalies (Basavaiah andMurthy 1987, Soman andBhavannandan 1993), polyploid level (Verma et al 1984), hybrid condition (Narain 1979, Yen et al 1993, cell response as a consequence of pesticides and antibiotic dosages (Kumar and Sinha 1991), abnormal genetic behavior due to treatment with chemical mutagen (Kumar andSrivastava 2001, Kumar andSharma 2002), crop culture condition (Pierozzi and Benatti Jr. 1998), failure of cell wall formation at premeiotic mitosis (Gates and Rees 1921, Beadle 1932, Kamra 1960, and genetically controlled behaviour (Brown andBertke 1974, De Mantu andSharma 1983). However, cytomixis in the present case may be attributed to either genetic or physiological factors.…”

Cytomixis in Pollen Mother Cells of Polygonum tomentosum Schrank.

“…Many authers suggest that cytomixis is an artifact of fixation (Linnert 1955, Takats 1959, Ahadi and Sharma 1988. However, I found that it occurs at an equal frequency in fixed and freshly stained material.…”

Cytomixis in pollen mother cells of an apomictic ornamental Ervatamia divaricata (Linn.) alston.

“…The underlying cause of cytomixis has been interpreted variously by different authors, including abnormal pathological condition (Bobak andHerich 1978 , Morisset 1978), effect of fixation (Linnert 1955, Takats 1959, Woodworth 1931 as well as a genetically controlled behaviour (Brown and Bertke 1974) . Its signi ficance too has been assessed differently including the possibility of occurrence of aneuploidy (Bell 1964, Cheng et al .…”