The viability of pollens of longkong, langsat (Aglaia domestica Pelleg.), and duku (Aglaia dookkoo Griff.)

The viability of pollens of longkong, langsat (Aglaia domestica Pelleg.), and duku (Aglaia dookkoo Griff.)
ความมีชีวิตของละอองเรณูของลองกอง ลางสาด และดูกู

Mongkol Lim, Assoc. Prof., D. of Plant Sci., F. of Natural Resources, PSU.
Jarassri Nualsri, Asst. Prof., D. of Plant Sci., F. of Natural Resources, PSU.
Uraiwan Namsri, D. of Plant Sci., F. of Natural Resources, PSU.
Corresponding e-mail : lmongkol@ratree.psu.ac.th

Grant : Government Budget
Published : Songklanakarin J Sci Technol 2000, 22(1) : 35-41
Key words : longkong, duku (Aglaia dookkoo Griff.), langsat (Aglaia domestica Pelleg.) pollen viability

Investigation of viability and germination pollens sampled from anthers of seeding and grafted longkong, indigenous langsat, duku nam and indigenous duku was carried out during March 1996 to August 1998, at the Prince of Songkla University and at the longkong farmer's orchards, amphoe Na Thawi, Songkhla province. The anthers were collected from flowers of 4 different stages of development. Pollen viability was tested using 1% acetocarmine dye and pollen germination was tested on culture medium containing 10% sucrose, 1% agar, 0.01 mg/l boric acid and 1 mg/l calcium chloride, incubated at 36^oC with 24 hours light. Pollen viability of indigenous duku and indigenous langsat at the fully-opened stage of flowering were 87.07 and 7.78 %, respectively, but there was no viability of seeding and grafted longkong and duku nam pollen. The highest percentage of germination (3.95%) and the longest pollen tube length of 104.28 mm were found in the culture of pollens collected from fully-opened flowers of indigenous duku while there was no germination of the other varieties.

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