Authors:
Muhammad Zulkiffal, Aneela Ahsan, Javed Ahmed, Aziz ur Rehman, Muhammad Abdulah,
Saima Gulnaz, Muhammad Musa, Abdullah, Sadia Ajmal and Muhammad Ijaz |
Abstract:
A panel of 30 advanced lines with two checks (Anaj17 and Ujala16) was grown under normal,
drought and heat prone environments. The data of 9 different traits were subjected to
multivariate technique and stability analysis. The positive correlation of yield with GRW,
NDVIBT and NDVIAN and negative correlation with D/H, PH, CTBT and CTAN in all
environments was established. A positive association of yield and GRW with NDVIBT and
NDVIA data suggested an operative benchmark for screening genotypes in normal, drought and
heat environment due to the presence of stay-green while negative pattern of CTBT and CTAN
advocating that cooler canopies had association with higher yield. The genotypes which were
mutual in cluster-1were 1 and 8, genotypes 22 and 24 in cuslter-2 in all three environments while
in cluster-3 genotypes 30, 33 and 29 were common in normal and heat environment only.
For stability imagining and environmental valuation, biplots were constructed to partition the
genotypes and genotype by environment effects for 6 stress adaptive traits only. All three
environments were far from the biplot origin for exclusively CTBT, NDVIAN for normal, GRW
for heat, CTAN for drought and heat. It is exposed that normal environment is comparatively
high contributor to the stability of genotypes for yield and heat environment for NDVIBT trait as
indicated by the shorter distance between its pointer and the origin. As concern relationship
among the genotypes, 20, 19, 29 for NDVIAN, 1, 13, 32 for CTAN, 1, 2 NDVIBT, 3 for CTBT,
11, 15 for GRW, 1, 11, 12 for yield traits were different from the others Accordingly, 6 for
NDVIAN, 8, 27, 21for CTAN, 30, 13 NDVIBT, 4, 33 for CTBT, 32, 6, 7 for GRW, 3 for yield
signposts their stability in performance across environments. The angle evaluates the track and
magnitude of the connection between environments and genotypes. For instance, 13 was beneath
average in entire environments whereas 15 was above average in entire environments. The
genotypes 32 and 33 had higher yield and GRW in normal and drought while 11 and 34 had greater yield and GRW in drought and heat environments, respectively due to their crossover
interface by linking them with an equality line. |
