Temperature and Relative Humidity Effects on Sugarcane Flowering Ability and Pollen Viability Under Natural and Seminatural Conditions

Flowering of sugarcane genotypes is important for the breeding program, but flowering is highly affected by environmental conditions. Field experiments were conducted at Sugarcane Field Station (26.52°N and 80.36°W), Canal Point, Florida, USA, during the 2015–2016 season, to explore the flowering be...

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Bibliographic Details
Published in:Sugar tech : an international journal of sugar crops & related industries 2019-02, Vol.21 (1), p.83-92
Main Authors: Abu-Ellail, Farrag F. B., McCord, Per H.
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Breeding
Environmental conditions
Environmental effects
Field tests
Flowering
Flowering plants
Genotypes
Germination
Humidity
Life Sciences
Plants (botany)
Pollen
Relative humidity
Research Article
Saccharum officinarum
Sugarcane
Temperature effects
Viability
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Summary:Flowering of sugarcane genotypes is important for the breeding program, but flowering is highly affected by environmental conditions. Field experiments were conducted at Sugarcane Field Station (26.52°N and 80.36°W), Canal Point, Florida, USA, during the 2015–2016 season, to explore the flowering behavior of 12 sugarcane genotypes under natural and seminatural environments concerning the effects of temperature and % relative humidity on the pollen viability to find out the best stable ones in flowering to be used in the breeding program. There were critical 57 days under the natural condition with a night temperature of ≤ 20 °C during the sensitive floral tip and full emergence period. This led to a reduction in pollen viability percentage and % pollen germination percentages. Moreover, the flowering intensity was very much reduced. On another hand, there were no appreciable differences in relative humidity % in the same floral stages. The total flowering plants decreased under natural compared with seminatural conditions. The results showed that the tested genotypes varied significantly in all traits. The interaction of genotypes × treatments interaction had a significant effect on most studied traits. Most of the Houma cane genotypes such as HO11-512, HOCP12-643, and HOCP01-517 showed stable flowering and % pollen viability than CP genotypes and L ones (CPO4-1935, CPO8-2506, L11-187, and L09-112) under both conditions. The study suggests the genotypes are stable in flowering to use them in the breeding program.
ISSN:0972-1525
0974-0740
0972-1525
DOI:10.1007/s12355-018-0644-9