Author: Gerardo Ramirez Rosales
Publisher:
ISBN:
Category : Carotenoids
Languages : en
Pages :
Book Description
Abstract: The tomato crop is an important source of carotenoids such as beta carotene and lycopene. These carotenoids play important roles in human health and nutrition. Consequently, humans benefit from the development of tomatoes with enhanced carotenoid content. High pigment genes, such as dark green (dg) and high pigment (hp) that result in higher levels of carotenoids are available. The effects of these genes on plant development are not well understood. In addition, their effects in other traits such as seed longevity and total antioxidant capacity (TAC) have not been evaluated. This study evaluated the effect of fruit development on seed quality of tomato varieties with different concentrations of carotenoids. Gibberellin and norflurazon (an inhibitor of carotenoid synthesis) effects on speed of germination of varieties with different concentrations of carotenoids were also evaluated. Fruits and seeds of these varieties were assayed for TAC using the Photo-induced Chemiluminescense (PCL) and the Total Equivalent Antioxidant Capacity (TEAC) methods. Results indicated that the effect of fruit development on seed germination depends on the genotype and that the low speed of germination characteristic of the high lycopene line is independent of the gradual accumulation of lycopene. Seeds of the high pigment line treated with norflurazon plus gibberellin germinated faster than the control indicating that abscisic acid (ABA) is involved in the low speed of germination of high lycopene genotypes. Fruits of the dg line had significantly greater antioxidant capacity than fruits of the recurrent parent. However, seeds of the recurrent parent had higher antioxidant capacity than seeds of the high pigment line as assayed by both PCL and TEAC methods, suggesting that antioxidants in the fruit may compete with antioxidants in the seed. In conclusion, genotypes carrying the dg gene result in a high content of lycopene and antioxidant capacity and have delayed seed germination possibly caused by higher levels of ABA. Based on these results, fruits with high lycopene content may be desirable for human health perspective but result in lower quality planting material. The application of ABA inhibitors can minimize the effect of high pigment genes on the speed of seed germination.
Carotenoid and Fruit Development Effects on Germination and Vigor of Tomato (Lycopersicon Esculentum Mill.) Seeds
Author: Gerardo Ramirez Rosales
Publisher:
ISBN:
Category : Carotenoids
Languages : en
Pages :
Book Description
Abstract: The tomato crop is an important source of carotenoids such as beta carotene and lycopene. These carotenoids play important roles in human health and nutrition. Consequently, humans benefit from the development of tomatoes with enhanced carotenoid content. High pigment genes, such as dark green (dg) and high pigment (hp) that result in higher levels of carotenoids are available. The effects of these genes on plant development are not well understood. In addition, their effects in other traits such as seed longevity and total antioxidant capacity (TAC) have not been evaluated. This study evaluated the effect of fruit development on seed quality of tomato varieties with different concentrations of carotenoids. Gibberellin and norflurazon (an inhibitor of carotenoid synthesis) effects on speed of germination of varieties with different concentrations of carotenoids were also evaluated. Fruits and seeds of these varieties were assayed for TAC using the Photo-induced Chemiluminescense (PCL) and the Total Equivalent Antioxidant Capacity (TEAC) methods. Results indicated that the effect of fruit development on seed germination depends on the genotype and that the low speed of germination characteristic of the high lycopene line is independent of the gradual accumulation of lycopene. Seeds of the high pigment line treated with norflurazon plus gibberellin germinated faster than the control indicating that abscisic acid (ABA) is involved in the low speed of germination of high lycopene genotypes. Fruits of the dg line had significantly greater antioxidant capacity than fruits of the recurrent parent. However, seeds of the recurrent parent had higher antioxidant capacity than seeds of the high pigment line as assayed by both PCL and TEAC methods, suggesting that antioxidants in the fruit may compete with antioxidants in the seed. In conclusion, genotypes carrying the dg gene result in a high content of lycopene and antioxidant capacity and have delayed seed germination possibly caused by higher levels of ABA. Based on these results, fruits with high lycopene content may be desirable for human health perspective but result in lower quality planting material. The application of ABA inhibitors can minimize the effect of high pigment genes on the speed of seed germination.
Publisher:
ISBN:
Category : Carotenoids
Languages : en
Pages :
Book Description
Abstract: The tomato crop is an important source of carotenoids such as beta carotene and lycopene. These carotenoids play important roles in human health and nutrition. Consequently, humans benefit from the development of tomatoes with enhanced carotenoid content. High pigment genes, such as dark green (dg) and high pigment (hp) that result in higher levels of carotenoids are available. The effects of these genes on plant development are not well understood. In addition, their effects in other traits such as seed longevity and total antioxidant capacity (TAC) have not been evaluated. This study evaluated the effect of fruit development on seed quality of tomato varieties with different concentrations of carotenoids. Gibberellin and norflurazon (an inhibitor of carotenoid synthesis) effects on speed of germination of varieties with different concentrations of carotenoids were also evaluated. Fruits and seeds of these varieties were assayed for TAC using the Photo-induced Chemiluminescense (PCL) and the Total Equivalent Antioxidant Capacity (TEAC) methods. Results indicated that the effect of fruit development on seed germination depends on the genotype and that the low speed of germination characteristic of the high lycopene line is independent of the gradual accumulation of lycopene. Seeds of the high pigment line treated with norflurazon plus gibberellin germinated faster than the control indicating that abscisic acid (ABA) is involved in the low speed of germination of high lycopene genotypes. Fruits of the dg line had significantly greater antioxidant capacity than fruits of the recurrent parent. However, seeds of the recurrent parent had higher antioxidant capacity than seeds of the high pigment line as assayed by both PCL and TEAC methods, suggesting that antioxidants in the fruit may compete with antioxidants in the seed. In conclusion, genotypes carrying the dg gene result in a high content of lycopene and antioxidant capacity and have delayed seed germination possibly caused by higher levels of ABA. Based on these results, fruits with high lycopene content may be desirable for human health perspective but result in lower quality planting material. The application of ABA inhibitors can minimize the effect of high pigment genes on the speed of seed germination.
Tomato (Lycopersicon Esculentum Mill.) Seed Vigor
Author: Cosme Albert Argerich
Publisher:
ISBN:
Category :
Languages : en
Pages : 276
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 276
Book Description
Osmotic Priming of Tomato (Lycopersicon Esculentum Mill.) Seeds
Author: Ana Daniela Alvarado
Publisher:
ISBN:
Category :
Languages : en
Pages : 270
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 270
Book Description
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 768
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 768
Book Description
Developmental Rates and Biosynthesis of Carotenoids in Tomatoes (Lycopersicon Esculentum Mill.) as Influenced by Two Solar Radiation Levels
Author: Billy Dawson Horton
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 32
Book Description
Seed Quality and Fruit Development of Tomato Lycopersicon Esculentum Mill. as Influenced by Preharvest Treatment with Ethephon (2-chloroethyl Phosphonic Acid).
Author: Oh-Sik Kwon
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Relationships of Tomato (Lycopersicon Esculentum Mill.) Seed Respiration Rates to Germination Rates
Author: Nahm-su Kim
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
Book Description
Effect of Growth Regulators on Tomato (Lycopersicon Esculentum Mill.)
Author: Amitav Das
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659286247
Category :
Languages : en
Pages : 60
Book Description
Four locally grown varieties of tomato; BINA-3, BARI-3, Bahar, Maple and one Indian variety; Pussa Rubby (PR) were selected in this study to observe the effects of growth regulators(in different concentrations&combinations)on shoot initiation and root induction. MS media containing 1.5mg/l BAP and 0.2mg/l IAA showed best result with lowest callus formation and increased number of shoot in all the varieties.In this medium the best response was found for Maple(93.33%)followed by Pussa Ruby(86.67%)and for the other varieties such as BARI-3, BINA-3& Bahar gave almost similar response to that combination of the medium.The survival response of all varieties was in between 80-90%..BINA-3 showed highest number of fruits per plant while BINA-3 and BARI-3 showed highest average number of seeds per fruit.Finally, it was found that 1.5 mg/l BAP with 0.2mg/l IAA containing MS media is better for shoots induction and 0.2mg/l IAA containing 1/2 strength MS media is better for root formation in all five varieties.Each experiment was conducted three times(n=3).Regeneration percentages were analyzed by using SPSS(version 16)& significant differences among means were assessed by the Duncan test(P
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659286247
Category :
Languages : en
Pages : 60
Book Description
Four locally grown varieties of tomato; BINA-3, BARI-3, Bahar, Maple and one Indian variety; Pussa Rubby (PR) were selected in this study to observe the effects of growth regulators(in different concentrations&combinations)on shoot initiation and root induction. MS media containing 1.5mg/l BAP and 0.2mg/l IAA showed best result with lowest callus formation and increased number of shoot in all the varieties.In this medium the best response was found for Maple(93.33%)followed by Pussa Ruby(86.67%)and for the other varieties such as BARI-3, BINA-3& Bahar gave almost similar response to that combination of the medium.The survival response of all varieties was in between 80-90%..BINA-3 showed highest number of fruits per plant while BINA-3 and BARI-3 showed highest average number of seeds per fruit.Finally, it was found that 1.5 mg/l BAP with 0.2mg/l IAA containing MS media is better for shoots induction and 0.2mg/l IAA containing 1/2 strength MS media is better for root formation in all five varieties.Each experiment was conducted three times(n=3).Regeneration percentages were analyzed by using SPSS(version 16)& significant differences among means were assessed by the Duncan test(P
Physiological Studies on Tomato (Lycopersicon Esculentum Mill.) Seed Production, Development and Germination
Author: Veronica Maria Valdes Ruiz
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
High Temperature Effects on Pollination, Seed and Fruit Set in Tomatoes (Lycopersicon Esculentum Mill.).
Author: José Gabriel Vitória Levy
Publisher:
ISBN:
Category :
Languages : en
Pages : 244
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 244
Book Description