Abstract
The effects of low/high light intensities and day length on ear emergence time in climatic chambers were studied in 12 common wheat (Triticum aestivum L.) cultivars of different ecogeographical origin. Low light intensity (LI) affected the time to ear emergence in all the wheat cultivars of both the photoperiod sensitive and insensitive genotypes, increasing the number of days to ear emergence (DEE). Based on the increase in DEE, we chose samples with different light intensity responses among the cultivars and analyzed their F2 hybrids to see if they were segregating. Taken together, the data for the F2 plants and test cross showed that the strong response to light intensity is a recessive trait and that the parental cultivars differ by the two genes controlling the LI response in common wheat. Besides heading time, low LI increased the number of days to tillering in all the cultivars except Pitic 62, but short day affected the period to tillering less than low LI. The symbol Rli (the response to light intensity) is suggested to designate the genetic control of the response to LI in wheat. Thus, the response to LI may influence the adaptability to changing environmental conditions and yield of wheat cultivars.
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Claims 6
Claim · model-written summary
Low light increased days to ear emergence in all cultivars.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Low light intensitye0
- Outcome
- number of days to ear emergencee0
- Direction
- increasinge0
- Qualifier
- all the wheat cultivars of both the photoperiod sensitive and insensitive genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low light intensity (LI) affected the time to ear emergence in all the wheat cultivars of both the photoperiod sensitive and insensitive genotypes, increasing the number of days to ear emergence (DEE).”
Claim · model-written summary
Strong light intensity response was recessive.
- Taxon
- common wheatTriticum aestivume0
- Outcome
- strong response to light intensity is a recessive traite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taken together, the data for the F2 plants and test cross showed that the strong response to light intensity is a recessive trait and that the parental cultivars differ by the two genes controlling the LI response in common wheat.”
Claim · model-written summary
Parental cultivars differed by two genes controlling light intensity response.
- Taxon
- common wheatTriticum aestivume0
- Outcome
- parental cultivars differ by the two genes controlling the LI responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taken together, the data for the F2 plants and test cross showed that the strong response to light intensity is a recessive trait and that the parental cultivars differ by the two genes controlling the LI response in common wheat.”
Claim · model-written summary
Low light increased days to tillering except in Pitic 62.
- Taxon
- cultivarse0
- Treatment
- low LIe0
- Outcome
- number of days to tilleringe0
- Direction
- increasede0
- Qualifier
- except Pitic 62e0
Not reportedComparator
Verbatim
e0“Besides heading time, low LI increased the number of days to tillering in all the cultivars except Pitic 62, but short day affected the period to tillering less than low LI.”
Claim · model-written summary
Short day affected tillering time less than low light.
Verbatim
e0“Besides heading time, low LI increased the number of days to tillering in all the cultivars except Pitic 62, but short day affected the period to tillering less than low LI.”
Claim · model-written summary
The symbol Rli was proposed for genetic control of light intensity response.
- Taxon
- wheatTriticum aestivume0
- Outcome
- Rli (the response to light intensity) is suggested to designate the genetic control of the response to LIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The symbol Rli (the response to light intensity) is suggested to designate the genetic control of the response to LI in wheat.”
The same questions in other papers
light · growth · Triticum aestivum (wheat)Positive and negative results
38 papers in the same direction as this paper · 46 in the opposite direction
- positive
- positive
- positive
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See all 85 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.