background & aim: alhagi genus has two important  medicinal plant species in iran, including alhagi pseudoalhagi, and a. graecorum (known “kharshotor” in persian). these plants are distributed in iran like weeds. generally, alhagi is used as an anti-hemorrhoid, laxative and diuretic. manna in both species produced by activity of a kind of insect on alhagi branches which has medicinal proper...

in the present paper, the cytogenetic study including meiotic chromosome number and behavior along with pollen viability were performed in 4 populations of trigonella spruneriana boiss. this is the first cytogenetic report of the taxon. all populations are diploid and possess 2n = 2x = 16 chromosome number, which is consistent with the proposed basic number of x = 8. in addition, some meiotic i...

Genipa americana L., commonly known as genipap, belongs to the Rubiaceae family. This study aimed describe pollen morphology of species, evaluate its meiotic behavior and viability, provide information help maintenance conservation species in natural habitat. Flower buds were collected from 20 individuals Alta Floresta Matupá municipalities, Mato Grosso, Brazil. Pollen was characterized using a...

Background & Aim: Alhagi genus has two important  medicinal plant species in Iran, including Alhagi pseudoalhagi, and A. graecorum (known “Kharshotor” in Persian). These plants are distributed in Iran like weeds. Generally, Alhagi is used as an anti-hemorrhoid, laxative and diuretic. Manna in both species produced by activity of a kind of insect on <...

In Heteroptera, the division of sex chromosomes is well defined as post-reductional for most of species, i.e., the first meiotic division is equational and the second is reductional. However, in some species pre-reductional division has been observed, whereby the first meiotic division is reductional and the second is equational. These include Anisops fieberi (Notonectidae), Ectrychotes dispara...

Interspecific hybrids can be studied using methodologies in which the male gamete with high reproduction potential, viability, and fertility is prioritized. Passiflora species, lush, showy, exotic colors, have great potential for ornamental plant market. In addition, artificial were developed without many difficulties because of weak reproductive barriers. Thus, meiotic post-meiotic behaviors a...

The meiotic behavior of four interspecific promising hybrids was evaluated by conventional cytological methods. The female genitors were two artificially tetraploidized sexual accessions of B. ruziziensis (R41 and R44, 2n = 4 χ = 36), which were crossed to an agronomically superior natural tetraploid apomictic genotype of B. brizantha (B140 BRA003395). Three of them (HBGC313, HBGC 315, and HBGC...