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首页> 外文期刊>Sugar Tech >Temperature and Relative Humidity Effects on Sugarcane Flowering Ability and Pollen Viability Under Natural and Seminatural Conditions
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Temperature and Relative Humidity Effects on Sugarcane Flowering Ability and Pollen Viability Under Natural and Seminatural Conditions

机译：温度和相对湿度对自然和半自然条件下甘蔗开花能力和花粉活力的影响

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摘要

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 degrees N and 80.36 degrees 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 57days under the natural condition with a night temperature of 20 degrees 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 genotypesxtreatments 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.
机译：甘蔗基因型的开花对于育种程序很重要，但是开花受环境条件的影响很大。在2015-2016赛季期间，在美国佛罗里达州坎帕恩特的甘蔗田间站（北纬26.52度和西经80.36度）进行了田间试验，以探讨12种甘蔗基因型在自然和半自然环境下的开花行为，涉及到温度和相对湿度百分比对花粉生存力的影响，以找出开花中最稳定的花粉，以用于育种程序。在自然条件下有敏感的57天，敏感花尖和整个出苗期的夜间温度为20摄氏度。这导致花粉活力百分比和花粉发芽百分比降低。此外，开花强度大大降低。另一方面，在相同的花期中，相对湿度％没有明显的差异。与半自然条件相比，自然条件下开花植物总数减少。结果表明，所测基因型在所有性状上均存在显着差异。基因型相互作用与处理相互作用对大多数研究性状有显着影响。大多数Houma甘蔗基因型（例如HO11-512，HOCP12-643和HOCP01-517）比CP基因型和L基因型（CPO4-1935，CPO8-2506，L11-187和L09-112）显示稳定的开花和％花粉生存力）在两种情况下都可以。该研究表明该基因型在开花过程中稳定，可用于育种程序。

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