Physiological and morphological characteristics of Hevea rootstock in response to water stress

Bastiah Ahmad, . Physiological and morphological characteristics of Hevea rootstock in response to water stress. pp. 177-198. ISSN 1511-1768

The influence of rootstock and scion clones on physiological response of polybag buddings of Hevea to prolonged water stress was studied in glasshouse experiments. Stomatal response of scion clones to water stress could be influenced by monoclonal seedling rootstock that was grafted on. Clones grafted on RRIM 623 rootstock exhibited drought avoidance characteristics. This was indicated by rapid stomatal closure at the onset of water stress and the ability to maintain a high relative water content. The stomatal response of clone PM 10 grafted on PB 260 and RRIM 600 seedling rootstocks was less consistent. Hevea rootstocks also had distinct morphological development of the root system which was influenced by moisture availability. Differences in pre-dawn leaf water potential were also detected between rootstocks indicating differences in quantity of feeder roots hence capacity for water uptake. The importance of root morphological development and stomatal responses to soil water deficit as affected by rootstocks in influencing rootstock field performance are discussed.

Full text available from: Official URL: http://vitaldoc.lgm.gov.my:8060/vital/access/servi...

Abstract

The influence of rootstock and scion clones on physiological response of polybag buddings of Hevea to prolonged water stress was studied in glasshouse experiments. Stomatal response of scion clones to water stress could be influenced by monoclonal seedling rootstock that was grafted on. Clones grafted on RRIM 623 rootstock exhibited drought avoidance characteristics. This was indicated by rapid stomatal closure at the onset of water stress and the ability to maintain a high relative water content. The stomatal response of clone PM 10 grafted on PB 260 and RRIM 600 seedling rootstocks was less consistent. Hevea rootstocks also had distinct morphological development of the root system which was influenced by moisture availability. Differences in pre-dawn leaf water potential were also detected between rootstocks indicating differences in quantity of feeder roots hence capacity for water uptake. The importance of root morphological development and stomatal responses to soil water deficit as affected by rootstocks in influencing rootstock field performance are discussed.

[error in script]

Item Type:	Article
AGROVOC Term:	Plant morphology
AGROVOC Term:	Plant physiology
AGROVOC Term:	Hevea
AGROVOC Term:	Rootstocks
AGROVOC Term:	Water stress
AGROVOC Term:	Budding
AGROVOC Term:	Root systems
AGROVOC Term:	Stomatal conductance
AGROVOC Term:	Scions
AGROVOC Term:	Clones
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 03:24
URI:	http://webagris.upm.edu.my/id/eprint/23198

Actions (login required)

View Item