full2010.pdf - page 1314

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Ÿ¨ °Š„µ¦¡´¨Ž·ÉŠ Thidizuron ˜n °„µ¦³¨°„µ¦ÁºÉ°¤£µ¡Â¨³¥º—°µ¥» „µ¦ž{„‹„´œ °ŠÁ¢d¦rœ
œµ‡¦µ (Davallia spp.)
Effect of Thidiazuron Pulsing Treatments on Delaying the Senescence of Davallia Ferns
(Davallia spp .)
œ¡¦´˜œr š´—¤µ¨µ1 ¤´‡¦ „o ª»„Š2* ¨³¤´–”œµ ´ª®œ°Š3
Nopparat Tatmala1 Samak Kaewsuksaeng2* and Mantana Buanong3
š‡´—¥n °
„µ¦«¹„¬µ„µ¦‡ª‡» ¤‡»–£µ¡®¨´ Š„µ¦Á„ȝÁ„¸É ¥ªÂ¨³¥º—°µ¥»„µ¦ž{„‹„´œ °ŠÁ¢d¦rœœµ‡¦µÃ—¥Äo µ¦¨³¨µ¥
Thidiazuron (TDZ) š¸É°»–®£¼ ¤· 25 °Š«µÁŽ¨ÁŽ¸¥‡ªµ¤ºÊœ´¤¡´ š›r¦o°¥¨³ 60 – 70 ¡ªnµ„µ¦¡´¨Ž·ÉŠ (Pulsing) Á¢d ¦rœ
œµ‡¦µÄœµ¦¨³¨µ¥ TDZ š¸É‡ªµ¤Á o¤ oœ 10 ômol µ¤µ¦™³¨°„µ¦Áž¨¸É¥œÂž¨ŠœÊ宜´„— Á¡·É¤ž¦³· š›·£µ¡
„µ¦—¼—œÊÎ µ °Ššn°¨Î µÁ¨¸¥ŠÂ¨³³¨°„µ¦¨µ¥˜´ª °Šž¦· ¤µ–‡¨°Ã¦¢d¨¨r Á° ¸ ¨³ž¦·¤µ–‡¨°Ã¦¢d ¨¨rš´ÊŠ®¤—Å—o—¸
š¸É »— ¦°Š¨Š¤µÅ—o „n TDZ š¸É‡ªµ¤Á o ¤ oœ 5 ômol ¨³»—‡ª‡»¤ ×¥ª· ›¸„µ¦ž{„nÁ¢d¦rœœµ‡¦µ¤¸°µ¥»„µ¦ž{„‹„´œ
œµœš¸É »—¦°Š¨Š¤µÅ—o „n „µ¦¡´¨Ž·ÉŠ ×¥¤¸°µ¥»„µ¦ž{„‹„´œÁšnµ„´ 6.2 5.5 ¨³ 4.0 ª´œ ˜µ¤¨Îµ—´
‡ÎµÎµ‡´: Á¢d¦rœœµ‡¦µ Thidiazuron °µ¥»„µ¦ž{„‹„´œ
Abstract
Effect of Thidiazuron (TDZ) pulsing treatments on delaying the senescence of Davallia fern (Davallia
spp.) was investigated by holding fern stems in 0 (control), 5 and 10 ôM TDZ, respectively, in an observation
room throughout experimental period. The results showed that 10 ôM TDZ holding treatment significantly
delayed the decrease of fresh weight, water uptake and chlorophyll a and b contents as compared to the control.
However, treatments of TDZ holding exhibited a significantly higher leakage of electrolytes than the control
leaves. In addition, pulsing treatment of 10 ôM TDZ significantly prolonged the vase life for 6.2 days while the
control leaves had the shortest vase life for 4.0 days.
Keywords: Davallia denticulata , Thidiazuron ,Vase life
1œ· ·˜ µ µª·µÁš‡ÃœÃ¨¥¸„µ¦Á„¬˜¦ ‡–³Áš‡ÃœÃ¨¥¸Â¨³„µ¦¡´ •œµ»¤œ ¤®µª·š¥µ¨´¥š´„¬·– ¡´š¨»Š 93110
2°µ‹µ¦¥r µ µª·µÁš‡ÃœÃ¨¥¸„µ¦Á„¬˜¦ ‡–³Áš‡ÃœÃ¨¥¸Â¨³„µ¦¡´•œµ»¤œ ¤®µª·š¥µ¨´¥š´„¬·– ¡´š¨»Š 93110
* Corresponding author : Ú¦«´¡šr/Ú¦µ¦ 074-693996Email-samak@tsu.ac.th
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„¦»ŠÁš¡ 10140