scholarly journals Growth Analysis on the Plant Type in Peanut Varieties, Arachis hypogaea L. : IV. Relationship between the varietal difference of the progress of leaf emergence on the main stem during pre-flowering period and the degree of morphological differentiation of leaf primordia in the embryo

1972 ◽  
Vol 41 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Kazumi MAEDA
1982 ◽  
Vol 9 (1) ◽  
pp. 35-40 ◽  
Author(s):  
K. J. Boote

Abstract Uniform growth stage descriptions were developed for peanut based on visually observable vegetative (V) and reproductive (R) events. The V stage was determined by counting the number of developed nodes on the main stem, beginning with the cotyledonary node as zero. The last node counted must have its tetrafoliolate leaf sufficiently expanded so the leaflets are unfolded and flat in appearance. The R stages proposed are R1 (beginning bloom), R2 (beginning peg), R3 (beginning pod), R4 (full pod), R5 (beginning seed), R6 (full seed), R7 (beginning maturity), R8 (harvest maturity), and R9 (over mature pod). The V and R stages can be measured separately and concurrently and apply to populations or single plants. For populations, a given stage is reached when 50% of the plants sampled have achieved the specified node number or have one or more flowers, pegs, pods, or seeds exhibiting the specified trait. The stages apply to both Spanish and Virginia type cultivars. The proposed standard descriptions of peanut plant development should aid in peanut research planning and communication and should assist extension recommendation of timing of cultural practices.


Euphytica ◽  
2017 ◽  
Vol 213 (2) ◽  
Author(s):  
Yingjie Li ◽  
Lanzhou Li ◽  
Xiurong Zhang ◽  
Kun Zhang ◽  
Dengchao Ma ◽  
...  

1994 ◽  
Vol 63 (2) ◽  
pp. 289-297 ◽  
Author(s):  
Lawrence Misa ABOAGYE ◽  
Akihiro ISODA ◽  
Hiroshi NOJIMA ◽  
Yasuo TAKASAKI ◽  
Takao YOSHIMURA ◽  
...  

1974 ◽  
Vol 1 (1) ◽  
pp. 20-23 ◽  
Author(s):  
R. H. Brown ◽  
W. J. Ethredge

Abstract Succinic acid 2,2-dimethylhydrazide (SADH) was applied at 0.95 kg/ha 60 days after planting to seven peanut (Arachis hypogaea L.) cultivars in 1970 and eight cultivars in 1971 and 1972. Pod yield of all cultivars were increased by SADH in 1970 by an average of 20%. Yields of Spanish type cultivars were increased in 1971 but not in 1972, while yields of runner and Virginia cultivars were not affected in 1971 nor 1972. There was a trend for increases in the number of pods per plant in Spanish cultivars in all three years and in runner and Virginia types in 1970. Weight per 100 pods was reduced in the Spanish cultivars only in 1972. Main stem lengths were reduced by SADH treatment by an average of 32% in 1970 and 27% in 1971.


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