Assessment of Genetic Variations of Taxodium Trees in Egypt

Abstract

The current study was carried out at the Faculty of Agriculture, Saba Basha, Alexandria University, and the horticultural research station, Sabahia, Alexandria, Egypt. From 2018 to 2022 assessment of genetic variations of Taxodium trees in Egypt based on the morphological description and DNA barcoding. Four different localities were designated to survey the Bald cypress (T. distichum) samples. The results recorded that the tree length ranged from 21.22 m (Giza tree) to 11.89 m (El-Beheria tree), while the Alexandria tree was recorded 17.30 m forward by Qalyubia tree in a range of 12.61 m. The tree trunk diameter (cm) ranged from 36.40 cm (El-Beheria tree) to 115 cm (Alexandria tree), while Qalyubia tree was recorded 46.40 cm forward by El-Beheria tree in the range of 36.40 cm. The tree condition for all the trees was very good except the tree from Giza governorate was moderate. From these data, we can describe the different Taxodium trees from different locations in Egypt to be genetic resources that can be used in the future in the breeding program. The data of T. distichum El-Beheria governorate using rbcL gene showed that the G+C content was 43.96% and the A+T content was 56.04%. in addition, the nucleotide number and molecular percentage were as follows: A (148) 27.92%; C (113) 21.32%; G (120) 22.64% and T (149) 28.11%; while T. distichum Qalyubia Governorate, showed that the G+C content was 42.96% and the A+T content was 57.04%. in addition, the nucleotide number and molecular percentage were as follows A (148) 26.92%; C (113) 22.32%; G (120) 23.64% and T (149) 27.11%. The data of T. distichum_ Alexandria Governorate showed that the G+C content was 43.96% and the A+T content was 56.04%. in addition, the nucleotide number and molecular percentage were as follows: A (148) 27.92%; C (113) 21.32%; G (120) 22.64% and T (150) 28.11%. finally, the data showed that the G+C content was 43.96% and the A+T content was 56.04%. in addition, the nucleotide number and molecular percentage were as follows: A (149) 27.92%; C (120) 21.32%; G (111) 22.64% and T (132) 28.11%. The data was recorded to the Protein in T. distichum_ Giza Governorate using (rbcL) gene.

Effect of Deficit Irrigation with Saline Water on Chemical Properties for Red Cabbage (Brassica oleracea var. capitate L.) under Drip Irrigation

“…In the same figure, an increase in the leaf content of proline when exposed to stress conditions showed 0.75% of total irrigation when using saline water compared to using the same treatment with fresh water, which showed the lowest value, which amounted to (144.07 μmol/g, 131.33 μmol/g) and (130.9 μmol/g,133.7 μmol/g) respectively. Also, it did not find differences with a significant effect when using two different types of the emitter with fresh water for the content of the leaves of proline, but the highest values of the Turbo emitter compared to the GR emitter when using 1% IF, where their values reached (134.67 μmol/g) and (137.4 μmol/g) respectively, [32] confirmed that the concentration of proline rises with high salinity concentrations. The increase in the accumulation of proline is also due to the increased destruction of proteins and their transformation into amino acids, including proline, as this amino acid works to regulate the osmosis of plant tissue cells and reduce the ionic effect resulting from saline stress, as proline leads to the reorganization of osmosis of the plant to be able to overcome the osmosis of the soil solution and contribute to the restriction of toxic elements absorbed under saline conditions [33].…”