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• CAmi Palacios

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Agronomia Costarricense 14(1): 73-78.1990.

DETERMINACION DEL CONTENIDO RELATIVO DE AGUA EN PROGENIES DE PALMA ACEITERA (Elaeis guineensis), DURANTE LA EPOCA SECA EN QUEPOS, COSTA RICA! Enrique Carlos

Villalobos

Humberto

*

Umana

Francisco

**

Sterling

**

Un

siste-

ABSTRACT

Determination neensis)

of

progenies

logy

to

hed.

Leaf

determine

placed and

dry

tral

vein),

an

the

relative

samples

in

relative

during

water

were

ice

until

(DW)

were

of

10

obtained

considered

of

the

water

for

was two

day.

Coefficients

1.65

to

to

persons

1.81.

parameter

It

tolerate

found

collect

and in

Apparently,

to

obtain

Un

dilema

desarrollar

seleccionar

que

afrontan

progenies

the

RWC large

under the

slow

the

los

los

fitomejoradores

atributos

de

la

a planta

la

sequia,

que

se

deben

1/

Recibido

para

Rica.

Miembro

I.nve~tigado.res tlgaclon.es

**

public~ci6~

el12

Costa

Universidad

de setiembre

Rica.

del del

Clentificas

de Costa Programa Consejo y

Rica.

de 19~9.

de

Apoyo

N~cional

Tecnol6glcas

San

Jose,

Costa

Financiero de (CONICIT)

a

PalmResearch Program,CompafiiaPalmaTica S.A. (Subsidiariade ChiquitaBrandsInternational,Inc.). Apartado30,lOOO-San Jose,CostaRica.

3.5

are to

in

son

poblaciones

in

local

(Carter, alta el

1989).

sensibilidad

y

asociadas

diffciles cambios

de

..

sola

la

sequia

caracteristica,

ajuste la

evaluar ambientales se et no

trata al.,

los osm6-

tolerancia

Algunas

SI

(Winter a

foliar, el con

1983).

gr~ndes

estomati-

enrollamiento

especlalmente

una

were deficit.

epicuticulares

tolerancia de

capa-

drought.

una

son ligeros

por

stable

RWC

(Sullivan,

mdeseable,

and their

objectives

caracteristicas

caracteristicas afectadas

one from

water

deshidrataci6n,

desecaci6n

depende

in

tolerate

cerosos

in

ranged

points

extenso,

la

samples

severe

that palm

tap

determined

progenies

of

dep6sitos

with

was

80

geneticamente

aun, de

for

manipular

es

Inves-

It

unexpensive

as

radical

Placement

covered

evaluated

of

high

tico,

Centropara Investigacionesen Granosy Semillas. (CIGRAS),

a simple,

la

cen-

calculated

leaflets.

ma

ala

*

is

a

the

was

cloth

values

progenies

the

and (TW)

(including

26:t2°C.

rate

ca es

TW

of

establishours,

weight

RWC

narrow

of

growth

guimethodo-

was

midday turgid

the

conditions

capacity

leaves at

cheese at

as

A

X 100. The size of the discs

numbers

('UY"; -1.£.1

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