THE EFFECT OF HEAT STRESS ON IN-VITRO POLLEN GRAIN GERMINATION AND POLLEN TUBE GROWTH IN CAPSICUM ANNUUM L.

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DANESHMAND F.; MANOUCHEHRI KALANTARI KH.

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Journal: IRANIAN JOURNAL OF BIOLOGY Year:2010 | Volume:22 | Issue:4 Page(s): 636-644

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Title

THE EFFECT OF HEAT STRESS ON IN-VITRO POLLEN GRAIN GERMINATION AND POLLEN TUBE GROWTH IN CAPSICUM ANNUUM L.

Author(s)

DANESHMAND F. | MANOUCHEHRI KALANTARI KH. | Issue Writer Certificate

Keywords

HEAT STRESSQ2

POLLEN GERMINATIONQ3

POLLEN TUBE GROWTHQ3

CAPSICUM ANNUUMQ3

Abstract

Temperature is one of the main factors which affect fruit and seed formation. In this study the effect of HEAT STRESS on in-vitro POLLEN GERMINATION and POLLEN TUBE GROWTH in CAPSICUM ANNUUM L.var. Malali were investigated. After onset of reproductive phase the plants were divided into two groups; control group were held into temperature regime treatment (25±3ºC day/ 18±3ºC night) and treatment group were held into temperature regime treatment (38±3ºC day/ 28±3ºC night) Pollen grains were collected from both control and those which were under HEAT STRESS were cultured on culture medium containing 10% sucrose , 0.1 mM boric acid, 1mM calcium chloride and 1% agar. The plates contained pollen grains were then transferred to growth chamber with different temperature from o to 40°C with 5°C interval. POLLEN GERMINATION percentage and the rate of POLLEN TUBE GROWTH during 1, 2 and 3 hours after treatment were calculated. POLLEN GERMINATION in control flowers was 80% in 20-25°C and reached to lower than 5% in temperature treatments of >35°C and <5°C. POLLEN GERMINATION in flowers from treatment group was about 15% in 20-25°C and reached to lower than 5% in temperature treatments of >30°C and <10°C. POLLEN TUBE GROWTH in control plants decreased from 0.5 mm in 20-25°C to lower than 0.005 mm in temperature treatments of >35°C and <10°C. POLLEN TUBE GROWTH in treatment group decreased from 0.07 mm in 20-25°C 0 mm in temperature treatments of >35°C and <10°C. Cross sections of anther for both control and HEAT STRESSed samples showed a significant increase in grains which were irregular, infertile and hollow in heat treated plants. The results from this research indicated that male reproduction organs in pepper plants are highly sensitive to HEAT STRESS.

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APA: Copy

DANESHMAND, F., & MANOUCHEHRI KALANTARI, KH.. (2010). THE EFFECT OF HEAT STRESS ON IN-VITRO POLLEN GRAIN GERMINATION AND POLLEN TUBE GROWTH IN CAPSICUM ANNUUM L.. IRANIAN JOURNAL OF BIOLOGY, 22(4), 636-644. SID. https://sid.ir/paper/21612/en

Vancouver: Copy

DANESHMAND F., MANOUCHEHRI KALANTARI KH.. THE EFFECT OF HEAT STRESS ON IN-VITRO POLLEN GRAIN GERMINATION AND POLLEN TUBE GROWTH IN CAPSICUM ANNUUM L.. IRANIAN JOURNAL OF BIOLOGY[Internet]. 2010;22(4):636-644. Available from: https://sid.ir/paper/21612/en

IEEE: Copy

F. DANESHMAND, and KH. MANOUCHEHRI KALANTARI, “THE EFFECT OF HEAT STRESS ON IN-VITRO POLLEN GRAIN GERMINATION AND POLLEN TUBE GROWTH IN CAPSICUM ANNUUM L.,” IRANIAN JOURNAL OF BIOLOGY, vol. 22, no. 4, pp. 636–644, 2010, [Online]. Available: https://sid.ir/paper/21612/en

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