دراسة المظاهر الخلوية لنمو حبوب اللقاح لستة أنواع من العائلة الصليبية

Abstract EN

The present investigation revealed cytological variations for six species (Eruca sativa, Sisymbirium irio, Diplotaxis harra, Erucaria hispanica, Schimpera Arabica and Brassica tournefortii) belong to the Brassicaceaefamily.

The flower buds were collected from Al-Habania lake that located in Al-Anbar-Iraq.

Using iron-acetocarmine squash technique in anther-smear studies which revealed a chromosomal anomalies such as Lagging / brddge chromosomes, Micronuclei & initiated delay of four daughter cells.

The frequency of abnormalities ranged (0.04 -0.77 %) which indicated the unstable heredity source of most wildplants.

The pollen grains viability was estimated using acetocarmine stain, viable grains had stained while sterile grains had not.

The biostatic analysis revealed a high significant deference at > 0.01 due to the highest numbers of viable pollen grains compared with sterility.

Pollen characters of polar and equatorial view are significantly sufficient for classified characterization of the plant species.

An interesting correlation ratio of P / E to estimate pollen grain shape, in Brassicaceae polar view was spheroidal three grooves of all species, wide elliptical shape or sub spheroidal in equatorial view, and grains size were medium.

The study conclusion that all six species have high productivity of viable pollen grains which confer resistance to environment, there by meiotic irregularities could be induced unstable genetic resources and sterility.