| Autor: |
Raja S; Department of Botany, Faculty of Science and Technology, Government College Women University, Faisalabad 38000, Pakistan., Farhat F; Department of Botany, Faculty of Science and Technology, Government College Women University, Faisalabad 38000, Pakistan., Tariq A; Department of Botany, Faculty of Science and Technology, Government College Women University, Faisalabad 38000, Pakistan., Malik Z; Department of Soil Science, Faculty of Agriculture & Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan., Aziz RB; Department of Horticulture, Nanjing Agricultural University, Nanjing 210095, China., Kamran M; School of Agriculture, Food and Wine, The University of Adelaide, Adelaide 5005, Australia., Elsharkawy MM; Department of Agricultural Botany, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt., Ali A; Department of Plant Breeding and Genetics, Muhammad Nawaz Sharif University of Agriculture, Multan 66000, Pakistan., Al-Hashimi A; Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia., Elshikh MS; Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia. |
| Abstrakt: |
Wastewater irrigation is a substitute for surface water scarcity, but traces of heavy metals (HMs) result in deleterious implications for soil, crop productivity, and in humans. Crops presenting HMs tolerance in genetic behavior are important for producing tolerant genotypes cultivated under wastewater irrigation. In the first part of this experiment, the results obtained previously are re-assessed in a hydroponic system and similar patterns and concentrations of HMs are found in different tomato organs. Following this trial, the tomato’s (Solanum lycopersicum L.) genetic basis of traits conferring HMs tolerance and yield are assessed when irrigated with waste or canal water. The North Carolina Mating II analysis illustrate the amount of gene action, nature, and inheritance pattern. Genetic components depict the involvement of non-additive, additive, and maternal genetic effects in HMs tolerance inheritance and yield. A noticeable increase in cumulative additive variance for the number of flowers (11,907.2) and the number of fruits (10,557.9) is recorded for tomato plants irrigated with wastewater, illustrating additive gene action. However, female and male (MSf/MSm) square ratios also show an association with cytoplasmic inheritance. For HMs tolerance, both additive and dominant variances appeared to be significant; cumulative dominance variance (4.83, 16.1, 4.69, 76.95, and 249.37) is higher compared to additive variance (0.18, 2.36, 0.19, −0.27, and 14.14) for nickel (Ni), chromium (Cr), lead (Pb), manganese (Mn), and zinc (Zn), respectively, indicating dominance gene action. The genotype RIOGRANDI accumulated and translocated fewer HMs to the aerial part of the plant compared to CLN-2418A and PB-017906, thus presenting a tolerant tomato genotype according to the hydroponic experiment. This also exhibited a differential pattern of gene action for HMs tolerance, suggesting that genotypes possess significant differences for HMs tolerance. |
