Effect of genetic improvement of grain yield and nitrogen efficiency of mid-season indica rice cultivars

2015 ◽  
Vol 178 (2) ◽  
pp. 297-305 ◽  
Author(s):  
Lijun Liu ◽  
Yiwei Xiong ◽  
Jinglong Bian ◽  
Hao Zhang ◽  
Junfei Gu ◽  
...  
Keyword(s):  
Grain Yield ◽  
Genetic Improvement ◽  
Indica Rice ◽  
Nitrogen Efficiency ◽  
Rice Cultivars

scholarly journals Effect of Panicle Size on Grain Yield of IRRI-Released Indica Rice Cultivars in the Wet Season

2004 ◽  
Vol 7 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Ma. Rebecca C. Laza ◽  
Shaobing Peng ◽  
Shigemi Akita ◽  
Hitoshi Saka
Keyword(s):  
Grain Yield ◽  
Indica Rice ◽  
Rice Cultivars ◽  
Wet Season

Multivariate analysis and selection criteria for identification of African rice (Oryza glaberrima) for genetic improvement of indica rice cultivars

2019 ◽  
Vol 17 (6) ◽  
pp. 499-505
Author(s):  
V. G. Ishwarya Lakshmi ◽  
M. Sreedhar ◽  
S. Vanisri ◽  
M. S. Anantha ◽  
L. V. Subba Rao ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Genetic Improvement ◽  
Indica Rice ◽  
Flowering Plant ◽  
Oryza Glaberrima ◽  
Panicle Length ◽  
Early Maturity ◽  
African Rice ◽  
Spikelets Per Panicle

AbstractThirty-one accessions of Oryza glaberrima were evaluated to study the genetic variability, correlation, path, principal component analysis (PCA) and D2 analysis. Box plots depicted high estimates of variability for days to 50% flowering and grain yield per plant in Kharif 2016, plant height, productive tillers, panicle length and 1000 seed weight in Kharif 2017. Correlation studies revealed days to 50% flowering, plant height, panicle length, number of productive tillers, spikelets per panicle having a high direct positive association with grain yield, while path analysis identified the number of productive tillers having the maximum direct positive effect on grain yield. Days to 50% flowering via spikelets per panicle, productive tillers and plant height via spikelets per panicle exhibited high positive indirect effects on grain yield per plant. PCA showed that a cumulative variance of 54.752% from yield per plant, days to 50% flowering, spikelets per panicle and panicle length, contributing almost all the variation of traits while D2 analysis identified days to 50% flowering and grain yield per plant contributing maximum to the genetic diversity. Therefore, selection of accessions with more number of productive tillers and early maturity would be most suitable for yield improvement programme. The study has revealed the utility of African rice germplasm and its potential to utilize in the genetic improvement of indica rice varieties.

Genetic Improvement of Root Growth and Its Relationship with Grain Yield of Wheat Cultivars in the Middle-Lower Yangtze River

2015 ◽  
Vol 41 (4) ◽  
pp. 613
Author(s):  
Zhong-Wei TIAN ◽  
Yong-Hui FAN ◽  
Mei YIN ◽  
Fang-Rui WANG ◽  
Jian CAI ◽  
...  
Keyword(s):  
Root Growth ◽  
Grain Yield ◽  
Yangtze River ◽  
Genetic Improvement ◽  
Wheat Cultivars ◽  
Lower Yangtze

Contribution of CIMMYT Wheat Germplasm to Genetic Improvement of Grain Yield in Spring Wheat of Sichuan, Yunnan, Gansu, and Xinjiang Pro-vinces

2011 ◽  
Vol 37 (10) ◽  
pp. 1752-1762 ◽  
Author(s):  
Yong ZHANG ◽  
Shi-Zhao LI ◽  
Zhen-Lu WU ◽  
Wen-Xiong YANG ◽  
Ya-Xiong YU ◽  
...  
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
Genetic Improvement ◽  
Wheat Germplasm
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