Abstract
Intra-category hybrids of Carthamus tinctorius were analyzed for the genetic toxicity in detail for effect of Cd2+ + Cr6+ on reproductive biology of Carthamus tinctorius. Five partially tolerant and five non-tolerant accessions of Carthamus tinctorius after screening were crossed to produce intra-category hybrid. These two heavy metals in combination influenced antagonistically first as well as second meiotic divisions inducing various kinds of anomalies and reduced the number of pollen grains per anther and significantly increased pollen sterility. A differential response for the amount of meiotic irregularity was recorded between different treated sets of hybrids in (Cd + Cr) treated sets. This could be due to differential response of the genotypes for the same concentration of (Cd + Cr). These two heavy metals in combination reduced the number of pollen grains per anther and significantly increased pollen sterility.
Highlights
It will not be wrong to say that industrial progress has become synonymous with an assault on nature
Intra-category hybrids of Carthamus tinctorius were analyzed for the genetic toxicity in detail for effect of Cd2+ + Cr6+ on reproductive biology of Carthamus tinctorius
A differential response for the amount of meiotic irregularity was recorded between different treated sets of hybrids in (Cd + Cr) treated sets. This could be due to differential response of the genotypes for the same concentration of (Cd + Cr). These two heavy metals in combination reduced the number of pollen grains per anther and significantly increased pollen sterility
Summary
It will not be wrong to say that industrial progress has become synonymous with an assault on nature. Most of the industries release a huge amount of heavy metal and contaminated the soil and posed a serious issue to sustainable agriculture and human health worldwide. Cadmium contamination in soil has posed a serious issue to sustainable agriculture and human health worldwide. The two largest sources of chromium emission in the atmosphere are the chemical manufacturing industries and combustion of natural gas, oil and coal. Assessment of the genetic impact of heavy metal pollution on plants is of great importance as plants play a major role to maintain ecological balance in nature and fulfill our various requirements. Plants are used as biosensors of genetic toxicity of heavy metal pollutants. The present paper discusses the toxic impacts of Cd2+ + Cr6+ on reproductive biology of some accessions of Carthamus tinctorius, an important oil crop
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