Influence of temperature and light conditions on dry-matter distribution, development rate and yield in arable crops.

Abstract

A review.-R.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Sowing Date Affects Maize Development and Yield in Irrigated Mediterranean Environments

“…Delays in the SD hastened plant development between seedling emergence and silking, reducing crop exposure to cumulative incident radiation during the vegetative period. Dobben [15] indicated that increases in temperature during the maize vegetative period hastened growth rate more than development rate, resulting in taller plants with larger biomasses.…”

“…Increases in temperature during the vegetative period of maize crops hastens the growth rate more than the development rate, resulting in taller plants with a larger biomass [15]. Thus, under field conditions, rising temperature reduces the duration of crop growth, and consequently SD reduces the time during which incident radiation can be intercepted and transformed into dry matter (DM) [16].…”

Growth rate inheritance and association with other traits in oats (Avena sativa L.)

“…Increased HI has played an important role in improving the grain yield of cereal crops (Cannell, 195 7;Donald, 1962;Nass, 1973;Rosielle and Frey, 1975a,b;Sapra and Hughes, 1977;Sims, 1963;Singh and Stoskopf, 1971;Syme, 1972;VanDobben, 1962;Vogel et al, 1963), primarily because improvement of this trait causes an increased translocation of the photosyn thate to the reproductive organs of the plant (Bhatt,19 76).…”

“…The role of harvest index in improving grain yield of cereal crops has been noted by many researchers (Cannell, 1967;Donald, 1962;Nass, 1963;Rosielle and Frey, 1975a,b;Sapra and Hughes, 1977;Sims, 1963;Singh and Stoskopf, 1971;Syme, 1972;VanDobben, 1962;Vogel et al, 1963). A high harvest index, however, does not insure a high grain yield if biological yield is low.…”

Inheritance, heritability, and correlation studies on harvest index and related traits in oats (Avena sativa L.)

“…In winter Hheat, van Dobben (7) found that increases in grain yields of Dutch cultivars since 1900 were due entirely to an increase in harvest index from 35% to 40%. In England?…”