CAJ | 학술논문

为了探讨不同低温对不同种源山桐子种子休眠的解除效果，以12个种源山桐子种子为材料，在5℃、10℃、12℃、15℃分别处理0 d、20 d、40 d、60 d，并在15/25℃条件下观测其发芽情况。结果表明：低温处理后，不同种源山桐子种子的发芽率和发芽势均有不同程度的提高，不同种源山桐子种子发芽率增加了5.38%~35.41%，增幅为8.26%~114.18%；发芽势增加了7%~48.96%，增幅为37.49%~276.19%。不同种源最合适的低温处理温度和低温处理时间不同，最适低温处理温度大致随纬度的升高而升高，10℃的低温对大部分种源的休眠解除效果较好，20 d的低温处理即可有效解除种子休眠。在较高的温度下，过长时间的低温处理会抑制种子的萌发，15℃的低温处理会延长山桐子种子的平均发芽时间。在低温处理60 d时，15℃的低温处理甚至导致了临安种源种子不发芽的情况。
위료탐토불동저온대불동충원산동자충자휴면적해제효과，이12개충원산동자충자위재료，재5℃、10℃、12℃、15℃분별처리0 d、20 d、40 d、60 d，병재15/25℃조건하관측기발아정황。결과표명：저온처리후，불동충원산동자충자적발아솔화발아세균유불동정도적제고，불동충원산동자충자발아솔증가료5.38%~35.41%，증폭위8.26%~114.18%；발아세증가료7%~48.96%，증폭위37.49%~276.19%。불동충원최합괄적저온처리온도화저온처리시간불동，최괄저온처리온도대치수위도적승고이승고，10℃적저온대대부분충원적휴면해제효과교호，20 d적저온처리즉가유효해제충자휴면。재교고적온도하，과장시간적저온처리회억제충자적맹발，15℃적저온처리회연장산동자충자적평균발아시간。재저온처리60 d시，15℃적저온처리심지도치료림안충원충자불발아적정황。
In order to explore the treatment effects of different low temperature on Idesia polycarpa seed dormancy breaking among different provenances, Idesia polycarpa seeds of 12 provenance were taken as material and treated for 0, 20, 40, 60 days respectively at 5℃, 10℃, 12℃, 15℃, then its germination was observed at 15/25℃. Results showed that the low temperature treatment could increase the seed germination rate and germination potential of Idesia polycarpa among different provenances in different levels, that would be 5.38%~5.38% increase in germination rate and 7%~48.96% increase in germination potential, with respective growth rates of 8.26%~114.18% and 37.49%~37.49%; the optimal treatment temperature and time among different provenances were different, the optimal treatment temperature were increased with the increase of latitude, low temperature of 10℃was better to break the seed dormancy for most of provenances, and 20 days of low temperature treatment could effectively break the seed dormancy, a long time low temperature treatment would inhibit the germination of seeds at higher temperatures, the mean time to germination of seeds would be prolonged at 15 ℃, and when the low temperature treatment time reached 60 days, the low temperature of 15 ℃ even had led to the Linan provenance seeds lost the ability to germinate.