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不会开花的甘蔗品种经过12(1/4)小时的光周期处埋,加上在每天上午6时至8时,下午4时至6时15分分别用红(R)和远红(FR)光照辅助处理替代白炽光,以诱导开花。这些试验从1982年到1984年连续在万丹甘蔗育种站进行。从1982年7月到12月用辅助光照的FR/R与R+FR/R+FR的组合首先获得助长效果。用不会开花的品种F157进行测试后,结果有23％和9％的甘蔗开花,而穗状雄花在白炽光光照的对照处理,一个也没有开花。而另一个开花不良的品种F167对R+FR/R+FR的处理反应很好,它有46％蔗茎开花。R/R,FR/FR和R/FR的处理组合,对开花的影响是无效的。20个开花不良的品种在1983年经过FR/R和R+FR/R+FR的处理对开花不发生影响。然而,这些同样品种用R+FR/R+FR1984年2月至7月进行了测试,有5个品种(B51116,F167,H60—3875,70—8539,71—4053)开花,有4个品种(Badila,F154,H58—665,H62—7115)开始开花,H58—665,H60—3875在用FR/R处理后也开始开花。对照的F167开花了,H58—665,H60—3875,70—8539开始开花。在同一年从7月至12月所进行的处理表明,R+FR/R+FR的处理适用于F167,FR/R的处理适用于F154,这些处理都是有效的。上述的结果表明,尽管红及远红光对诱导甘蔗开花的作 用因品种和年份的不同而不同,而对某些特殊的品种可具有实用的价值。
Uncultivated sugarcane varieties were sunk after 12 (1/4) hours of photoperiod, coupled with red (R) and far red (FR) signals from 6:00 am to 8:00 am and from 4:00 pm to 6:15 pm Light-assisted treatment replaces incandescent light to induce flowering. These tests were conducted continuously at the Banten Sugarcane Breeding Station from 1982 to 1984. From July to December 1982, the combination of FR / R and R + FR / R + FR with supplemental lighting first achieved the boost effect. After testing with the non-flowering variety F157, 23% and 9% of the sugar cane blooms, whereas the spikelets show control over incandescent light and none of them bloom. Another poorly flowering variety, F167, responded well to R + FR / R + FR treatment by 46% of the cane stems. The combination of treatments R / R, FR / FR and R / FR has no effect on flowering. The flowering of 20 poorly blighted cultivars was not affected by FR / R and R + FR / R + FR treatments in 1983. However, these same cultivars were tested with R + FR / R + FR from February to July 1984 and were blooming in 5 varieties (B51116, F167, H60-3875, 70-8539, 71-4053) with 4 cultivars (Badila, F154, H58-665, H62-7115), and H58-665, H60-3875 also began to bloom after treatment with FR / R. Control F167 bloomed, H58-665, H60-3875, 70-8539 began to flowering. The treatments carried out from July to December in the same year showed that the treatment of R + FR / R + FR for F167 and the treatment of FR / R for F154 were effective. The above results indicate that, although the effects of red and far red light on the induction of sugarcane flowering vary by species and year, they may have practical value for some special varieties.