การเปลี่ยนแปลงของ abscisic acid และ polyamines ในระหว่างการพัฒนาของผล และการเก็บรักษาที่อุณหภูมิต่ำของเงาะ

Name: ภาณุมาศ โพธิ์สุยะ

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: Rainbutanl Chilling injury

; Abscisic acid (ABA)

; Polyamines

Abstract: Hormonal metabolism associated with fruit development and ripening in"Seechompoo" and "Rongrein" rambutan fruits was investigated by measuring free and abscisic acid (ABA) and polyamines metabolites (Putrescine (Put), Spermidine (Spd) and Spermine (Spm)) levels in several tissues (peel, seed and pulp). In the peel, cis-trans-abscisic acid (s-ABA), trans-trans-abscisic acid (t-ABA) and phaseic acid (PA) levels reached a maximum at maturity stage or onset of ripening stage (8 or 10 WAFB), then declined throughout the harvest, while Put and Spd levels increased continu~usly. Neither respiration nor ethylene peak was found during ripening process. ABA and polyamines changes of rambutan might be related with ripeningprocess more than ethylene. Similar tendency was also found in seed that ABA and polyamines decreased suddenly after onset of ripening stage and showed that the seed had no dormancy when ripening progressed. Last development of rambutan was in the pulp, ABA levels decreased gradually in ripening process of "Seechompoo" cultivars, while it slightly increased at the end of ripening "Rongrein". Polyamines increased throughout the ripening process which related to cell expansion during the pulp setting.On exposure of "Rongrein" rambutan fmits to low temperature storage,"Rongrein" rambutan fruits showed slightly chilling injury (CI) damage as browning on the peel after 4 days of 8'C storage, which was positively correlated to water loss during storage (r = 0.9275). The rambutan fruits showed the evidence of severe browning at 8'C, while 13'C storage was unaffected by CI. In the peel, s-ABA, dihydrophaseic acid (DPA) and Put levels were increased throughout the storage. Thehigher rates of s-ABA, DPA and Put levels were found in fruits stored at 8'C more than 13'C, especially, high correlation between DPA levels with CI symptoms (r = 0.8777). Similarly, it was found in seed alteration, except only polyamine levels, which were decreased after 6 days storage at 8'C. Lastly in the pulp, DPA levels decreased after 6 days in the fruits stored at 8'C, while polyamine levels wereincreased throughout the storage. In contrast, DPA levels increased after 4 days in the fruits stored at 13'C. The increases in ABA and polyamines during low temperature storage were similar to the occurrence in response to stress.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร (Bangkok)

Email: info.lib@mail.kmutt.ac.th

Name: Asst.Prof.Dr. Sirichai Kanlayanarat

Role: Supervisor

Created: 2543

Issued: 2005-11-16

Modified: 2006-05-30

วิทยานิพนธ์/Thesis

ISBN: 9746283359

CallNumber: PHT63

tha

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีหลังการเก็บเกี่ยว

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

©copyrights มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	PHT63.pdf	28.59 MB	218	2022-02-14 23:13:53
2	PHT63ab.pdf	178.5 KB	36	2020-03-19 09:32:21
3	PHT63ab.txt	2.67 KB	35	2018-05-13 06:03:18

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