Asian Journal of Basic Science & Research, Dec 31, 2022
░ 1. Introduction An understanding of how plants grow is a topic of intrinsic interest and as a r... more ░ 1. Introduction An understanding of how plants grow is a topic of intrinsic interest and as a result, a lot of research has been done regarding this. A common message that has been emerged from these studies is that these development progresses are regulated by specific endogenous chemicals. These compounds were earlier called as 'plant hormones' but recently the term 'plant growth regulators' have been adopted. Plant growth regulators (PGR) are natural or synthetic chemicals that can influence the growth of a plant or plant part. Plant growth hormones (PGRs) play a vital role in cell division, growth and differentiation (Hooley, 1994). There are 5 classes of compounds in the premier division of endogenous PGRs. These are auxins, gibberellins (GAs), cytokinins (CKs), abscisic acid (ABA) and ethylene. Generally speaking, the auxins and GAs have been classified as cell elongation regulators, CKs as cell division regulators, ABA as general inhibitor and ethylene as volatile with various effects. Plant growth regulators such as gibberellic acid (GA3), abscisic acid (ABA), kinetin and ethylene are known to influence the dormancy status of seeds (Karssen 1995). Changes in hormone concentration and tissue sensitivity mediate a range of developmental processes in plants, many of which involve interactions with environmental factors (Buchanan et al., 2015). New, naturally occurring substances in these categories are still being discovered. At the same time, novel structurally related compounds are constantly being synthesized. There are also many new but chemically unrelated compounds with similar hormone-like activity being produced. More recently discovered natural growth substances that have phytohormonal-like regulatory roles (polyamines, oligosaccharins, salicylates, jasmonates, sterols, brassinosteroids, dehydrodiconiferyl alcohol glucosides, turgorins, systemin, unrelated natural stimulators and inhibitors), as well as myoinositol. Many of these growth active substances have not yet been examined in relation to growth and organized development in vitro.
This research paper delves into the influence of plant growth regulators (PGRs) on the germinatio... more This research paper delves into the influence of plant growth regulators (PGRs) on the germination percentage of four distinct plant species, specifically Albizia lebbeck (L.) Benth., Holoptelea integrifolia (Roxb.) Planch., Acacia catechu (L.f.) Willd., and Terminalia bellirica (Gaertn.) Roxb. The study was conducted at Arid Forest Research Institute, Jodhpur, during the summer of 2022. The study employed three PGRs: gibberellic acid (GA3), indole acetic acid (IAA), and indole-3-butyric acid (IBA) at two concentrations of 500 ppm and 1000 ppm. The primary objectives of this study were to evaluate the germination percentage of the four plant species and to ascertain the optimal PGR treatment for seed germination. The results of this research could potentially aid in the development of effective strategies to enhance seed germination and overall plant growth. The study revealed that the impact of PGRs on germination percentage was dependent on the plant species and the concentration of the PGR used. The findings indicated that the use of PGRs at appropriate concentrations could increase the germination percentage of seeds. Of the three PGRs used in the study, GA3 was found to be the most effective at enhancing seed germination for all four plant species, followed by IAA and IBA. Overall, this research has demonstrated that the use of PGRs can significantly improve seed germination percentage and can provide valuable insights into the optimal concentration of PGRs required for the best possible results. The study results could potentially assist in the development of PGR-based strategies to enhance plant growth and productivity, which could have important implications for agricultural and environmental sustainability.
Asian Journal of Basic Science & Research, Dec 31, 2022
░ 1. Introduction An understanding of how plants grow is a topic of intrinsic interest and as a r... more ░ 1. Introduction An understanding of how plants grow is a topic of intrinsic interest and as a result, a lot of research has been done regarding this. A common message that has been emerged from these studies is that these development progresses are regulated by specific endogenous chemicals. These compounds were earlier called as 'plant hormones' but recently the term 'plant growth regulators' have been adopted. Plant growth regulators (PGR) are natural or synthetic chemicals that can influence the growth of a plant or plant part. Plant growth hormones (PGRs) play a vital role in cell division, growth and differentiation (Hooley, 1994). There are 5 classes of compounds in the premier division of endogenous PGRs. These are auxins, gibberellins (GAs), cytokinins (CKs), abscisic acid (ABA) and ethylene. Generally speaking, the auxins and GAs have been classified as cell elongation regulators, CKs as cell division regulators, ABA as general inhibitor and ethylene as volatile with various effects. Plant growth regulators such as gibberellic acid (GA3), abscisic acid (ABA), kinetin and ethylene are known to influence the dormancy status of seeds (Karssen 1995). Changes in hormone concentration and tissue sensitivity mediate a range of developmental processes in plants, many of which involve interactions with environmental factors (Buchanan et al., 2015). New, naturally occurring substances in these categories are still being discovered. At the same time, novel structurally related compounds are constantly being synthesized. There are also many new but chemically unrelated compounds with similar hormone-like activity being produced. More recently discovered natural growth substances that have phytohormonal-like regulatory roles (polyamines, oligosaccharins, salicylates, jasmonates, sterols, brassinosteroids, dehydrodiconiferyl alcohol glucosides, turgorins, systemin, unrelated natural stimulators and inhibitors), as well as myoinositol. Many of these growth active substances have not yet been examined in relation to growth and organized development in vitro.
This research paper delves into the influence of plant growth regulators (PGRs) on the germinatio... more This research paper delves into the influence of plant growth regulators (PGRs) on the germination percentage of four distinct plant species, specifically Albizia lebbeck (L.) Benth., Holoptelea integrifolia (Roxb.) Planch., Acacia catechu (L.f.) Willd., and Terminalia bellirica (Gaertn.) Roxb. The study was conducted at Arid Forest Research Institute, Jodhpur, during the summer of 2022. The study employed three PGRs: gibberellic acid (GA3), indole acetic acid (IAA), and indole-3-butyric acid (IBA) at two concentrations of 500 ppm and 1000 ppm. The primary objectives of this study were to evaluate the germination percentage of the four plant species and to ascertain the optimal PGR treatment for seed germination. The results of this research could potentially aid in the development of effective strategies to enhance seed germination and overall plant growth. The study revealed that the impact of PGRs on germination percentage was dependent on the plant species and the concentration of the PGR used. The findings indicated that the use of PGRs at appropriate concentrations could increase the germination percentage of seeds. Of the three PGRs used in the study, GA3 was found to be the most effective at enhancing seed germination for all four plant species, followed by IAA and IBA. Overall, this research has demonstrated that the use of PGRs can significantly improve seed germination percentage and can provide valuable insights into the optimal concentration of PGRs required for the best possible results. The study results could potentially assist in the development of PGR-based strategies to enhance plant growth and productivity, which could have important implications for agricultural and environmental sustainability.
Uploads
Papers by Apurva Yadav