TY  - CHAP
AV  - restricted
UR  - http://oar.icrisat.org/9918/
T2  - Horticulture for Nutrition Security
PB  - Daya Publishing House
TI  - Environment-Sensitive Male-Sterility in some Food Crops
A1  - Saxena, K B
A1  - Bharathi, M
SN  - 978-93-5124-660-2
N2  - Flowering is an indispensable phenomenon of natural reproduction. To enter in
the reproductive phase, most plant species get critical signals from different
environmental factors which facilitate the conversion of their vegetative buds into
reproductive tissues. The major factors that influence the appearance of flowers are
moisture stress, temperature, photoperiod and irradiation. According to Bernier et al.
(1993) these factors are perceived by different plant parts. For example, leaves are
affected by photoperiod and irradiation; while temperature is perceived by all plant
parts. Similarly, vernalization affects shoot apex and moisture availability is perceived
by roots. These external determinants do not act independently and their interaction
is inevitable and a particular factor may alter or substitute the direct effect of the other
factors; and this may change the threshold level of individual factor in inducing
flowering. Since at a given point of time,these environmental factors may act on
different parts of the plant in their own way, the interaction among their gene products
(proteins) may decide the transition of the vegetative buds into reproductive buds.
Once flowering is induced in the plants, the further development of reproductive
parts leads to differentiation into male/female gametes which participate in the
natural reproduction. In this processes also, certain environmental factors play an
active role and any departure from the normal process of microsporogenesis/
megasporogenesis leads to disorders such as male or female sterility.In this chapter
the authors have not attempted a thorough review of male sterility systems of food
cops but restricted to environment-sensitive male sterility with brief description of
their origin, possible variants, maintenance and utilization in two-parent hybrid
breeding...
SP  - 385
Y1  - 2015///
EP  - 410
ID  - icrisat9918
KW  - Male Sterility
KW  -  Food Crops
KW  -  Sterility Systems
KW  -  Cereal Crops
KW  -  Legume Crops
KW  -  Flowering
KW  -  Crops
CY  - New Delhi
ED  - Peter, K V
ER  -