Abstract
Thiourea is a potential plant growth regulator that improves stress tolerance potential in a variety of plants. Exogenous application of thiourea enhanced the growth and yield of plants, but different concentrations are required by different crops therefore optimization of thiourea is needed for each crop plant. These experiments were arranged to screen out optimum level of thiourea for maize hybrids at both whole plant and cellular levels. Two experiments were done, first at whole plant level; two hybrids DK6789 and 33M15 were used. Thirteen levels of thiourea (0, 200, and 400, to 2400 M) were applied through sand application to plants after 15 days of germination, and in second experiment same hybrids were used to investigate optimum level of thiourea for callusing attributes. Immature embryo were cultured on N6 (Chu et al) medium supplemented with 3.99g/L salt, 3% sucrose, 2.5 g/L proline, 0.2g/L casein hydrolysate, 2,4-D 2g/L, AgNO 3 0.015 g/L, and agar 8g/L. Above applied levels of thiourea were supplemented to callus induction medium. Among all applied thiourea levels, 400 M thiourea level was found to be most effective. Thiourea significantly improved in vivo attributes like shoot and root length, fresh and dry weights of shoot and root, leaf area and shoot/root mass ratio. Thiourea was also found very effective in improving in vitro attributes especially improved callus quantity and quality. This could be a great achievement towards better maize genetic transformations for development of resistant crops.
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Claims 4
Claim · model-written summary
Among the tested thiourea levels, 400 M was the most effective for maize hybrids.
- Treatment
- 400 M thiourea levele1
- Outcome
- effectivee1
- Direction
- most effectivee1
- Comparator
- all applied thiourea levelse1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Among all applied thiourea levels, 400 M thiourea level was found to be most effective”
e3“screen out optimum level of thiourea for maize hybrids”
Claim · model-written summary
Thiourea significantly improved shoot and root length and fresh and dry weights of shoot and root in maize hybrids.
- Material
- DK6789 and 33M15e4
- Treatment
- Thioureae0
- Outcome
- shoot and root length, fresh and dry weights of shoot and roote0
- Direction
- significantly improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thiourea significantly improved in vivo attributes like shoot and root length, fresh and dry weights of shoot and root, leaf area and shoot/root mass ratio”
e3“screen out optimum level of thiourea for maize hybrids”
e4“two hybrids DK6789 and 33M15 were used”
Claim · model-written summary
Thiourea significantly improved leaf area and shoot/root mass ratio in maize hybrids.
- Material
- DK6789 and 33M15e4
- Treatment
- Thioureae0
- Outcome
- leaf area and shoot/root mass ratioe0
- Direction
- significantly improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thiourea significantly improved in vivo attributes like shoot and root length, fresh and dry weights of shoot and root, leaf area and shoot/root mass ratio”
e3“screen out optimum level of thiourea for maize hybrids”
e4“two hybrids DK6789 and 33M15 were used”
Claim · model-written summary
Thiourea improved callus quantity and quality in vitro in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Thiourea was also found very effective in improving in vitro attributes especially improved callus quantity and quality”
e3“screen out optimum level of thiourea for maize hybrids”
The same questions in other papers
thiourea · growth · Zea mays (maize)Results differ
9 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- positive
7 papers more in this group
See all 11 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.